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Photos / Sounds

Observer

selvadero

Date

June 25, 2018 04:42 PM EDT

Description

When I first saw this plant, I thought it was Costus arabicus, but after seeing the variability of the Costus macrostrobilus plants here, I now believe it is simply a variation of that species with very small bract appendages, indistinct from the bracts, and with flowers lacking the normal red stripes on the labellum. The leaves on this plant had similar indumenta as the other C. macrostrobilus found here, but with smaller leaves measuring about 34 cm long and 12 cm wide.

Photos / Sounds

Observer

selvadero

Date

June 26, 2018 11:17 AM EDT

Description

This observation of Costus macrostrobilus was more typical of the plant form found at the species' type locality in Puerto Rico. It has a white corolla and distinct red stripes on the labellum. The scabrous hairs on the upper sides of the leaves were variable in density. The undersides were soft and felty feeling. The leaves on all these plants were quite large measuring 51-60 cm in length and 14-18 cm in width. The bract appendages were of varying sizes, but on most plants they were triangular in shape and only somewhat distinct from the bract. Most of the C. macrostrobilus plants found at Asa Wright were similar to these photos.

Photos / Sounds

Observer

selvadero

Date

June 27, 2018 10:03 AM EDT

Description

Currently this is classified as a variety of Costus guanaiensis, but in an upcoming revision to the family it will revert to its original type as a separate species of Costus macrostrobilus. I went to Trinidad specifically to see this species and found it to be polymorphic, with varying shapes and sizes to the bract appendages and variable indumenta on the upper sides of the leaves. This observation was a plant similar to the form found in Central America and the western parts of Colombia and Ecuador. The bract appendages are discreet from the bracts, rounded in shape and have a pungent apex. The flowers on this plant were yellowish in color in contrast to other plants with nearly pure white flowers.

Photos / Sounds

Observer

selvadero

Date

June 26, 2018 06:50 AM EDT

Description

This was the most common species of Costaceae found in this region. It is consistent in form with plants I have seen in other countries in South America.

Photos / Sounds

Observer

selvadero

Date

March 5, 2018 09:56 AM EST

Description

This form of Costus beckii has the cultivar name 'Alan's Red'.

Photos / Sounds

Observer

selvadero

Date

March 5, 2018 08:00 AM EST

Description

This form with thick brown hairs on the stems but mostly glabrous leaves was seen along the Rio San Gabán.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 4, 2018 04:57 PM EST

Description

This is an undescribed new species from Bolivia and Peru that is somewhat variable in form. It has narrow leaves and small triangular appendages to the bracts. The bract colors vary from green to red. The flowers are solid red to pink. It is fairly common along the Rio San Gabán east of the village.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 4, 2018 12:34 PM EST

Description

This is an undescribed new species in the form of a Costus cultivar 'Red Feathers'.

Photos / Sounds

Square

Observer

selvadero

Date

March 4, 2018 09:13 AM EST

Description

This form is the original Costus laevis form as collected in 1787 in Huanuco by Hipolito Ruiz. It was not common in this area but a few plants were seen along the Rio Inambari and Rio San Gabán.
----------------------------
UPDATE 26-April-2018
This green bracted form of C. aff. spiralis has been determined to be the original Costus laevis as collected by Hipolito Ruiz. It may be maintained as a separate species or may become a formal variety of Costus spiralis in a future revision to new world Costus.

Photos / Sounds

Observer

selvadero

Date

March 4, 2018 11:50 AM EST

Description

This little-known species was found at 4 sites a few km east of the town of San Gabán. The precise coordinates are not included here due to the rarity of this species. It was not in flower when I was there but was identified by comparison to the type specimen and description of the species. At one site an old inflorescence was found chopped off, on the ground, near where a living plant was seen.

When not in flower it can be distinguished by its very short ligule and long petiole, by the glaucus covering on the young shoots, and the prominent veins on the leaves.

Photos / Sounds

What

Dwarf Orange Ginger Costus productus

Observer

selvadero

Date

March 4, 2018 08:56 AM EST

Description

This beautiful form of Costus productus has deeply plicate leaves and most plants have dark purple undersides to the leaves.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 3, 2018 08:47 AM EST

Description

This may be a new and undescribed species of Costus or possibly it a form of Costus acreanus. It was not in flower when I was there, but the photo at the Botanical Research Institute of Texas (BRIT) for collection Chambi 744 shows a basal inflorescence, which was confirmed to me by a local resident. I saw this species at this site (GPS coordinates) and also in a forested area behind the hotel where I stayed.

Photos / Sounds

Observer

selvadero

Date

March 3, 2018 10:26 AM EST

Place

(Somewhere...)

Description

This plant comes closest to the species C. guanaiensis but possibly is a hybrid with the sp. nov. Chambi 1098, which was found on the same private property near Quincemil.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 3, 2018 11:53 AM EST

Description

This is a new and undescribed species of Costus that I found at 3 sites around Quincemil (this the largest, public access site). It was collected in 2008 by B. R. Chambi No. 1098 and shown on the website of the Botanical Institute of Texas (BRIT).

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 3, 2018 06:22 AM EST

Description

This is an undescribed new species of Costus that will likely be named and published along with Paul Maas' revision to his 1972 monograph. It is somewhat variable in form throughout its range in Bolivia and Peru. I have seen this particular form before at Villa Carmen near Pilcopata, Cuzco, Peru. It has an unusual flower structure with the corolla lobes folded outward and a more or less flattened labelum with recurved margins.

Photos / Sounds

Observer

selvadero

Date

March 2, 2018 05:05 PM EST

Description

This is the original Costus laevis as collected by Hipolito Ruiz in 1787 in department Huanuco, Peru. This species name will likely be split or undergo other major changes in the near future when a revision to Paul Maas' monograph is completed.
----------------------------
UPDATE 26-April-2018
This green bracted form of C. aff. spiralis has been determined to be the original Costus laevis as collected by Hipolito Ruiz. It may be maintained as a separate species or may become a formal variety of Costus spiralis in a future revision to new world Costus.

Photos / Sounds

Observer

selvadero

Date

March 2, 2018 01:54 PM EST

Description

At higher elevations around Quincemil there were still a few plants of this species that were in flower. Identified by the shape of the flower and the silvery sheen on the undersides of leaves.

Photos / Sounds

Observer

selvadero

Date

February 28, 2018 04:42 PM EST

Description

This species was quite common at LPAC, but was past flowering when I was there. The flower photo was provided by David Johnston from a plant near one of the platforms.

Photos / Sounds

Observer

selvadero

Date

February 27, 2018 01:56 PM EST

Description

This plant was fairly common in the area but most plants were past flowering when I was there. This one was found in flower.

Photos / Sounds

Observer

selvadero

Date

March 1, 2018 08:29 AM EST

Description

The other 2 sites where this species was found were along Alberto's River Trail, an area of flood plain with no obvious special habitat, in clay soil. As in the first site it was past flowering but unmistakable. (Also -12.07661, -69.49802 along the same trail) I found it interesting that this species was not seen along the terra firma trails north of PIE and vicinity nor along the Lucerna trail.

Photos / Sounds

Observer

selvadero

Date

February 28, 2018 10:39 AM EST

Description

This site was near the waterfall, in an area where the bedrock appears high above the river. These plants were growing in clay soil along the trail in a small wash area. They were past flowering but identified by the shape of the leaves and indumenta, and by the root tubers which give subsistence to the plant while it is in dormancy during the dry season. Most of the plants were well beyond flowering and fruiting, their seeds already disbursed and there were many small seedlings in the area.

Note that this species was previously included in Chamaecostus subsessilis, but the western plants split out and moved to C. acaulis in 2016 by Thiago André. That change has not been accepted by some botanists.

Photos / Sounds

Observer

selvadero

Date

February 25, 2018 04:32 PM EST

Description

Costus scaber was fairly common in the Puerto Maldonado region, but few plants were found in flower at the time I was there.

Photos / Sounds

Observer

selvadero

Date

February 25, 2018 03:49 PM EST

Description

This plant was not in flower but believed to be C. guanaiensis based on the size and shape of the bract appendages.

Photos / Sounds

Observer

selvadero

Date

February 25, 2018 06:30 AM EST

Description

This is believed to be D. argenteus based on the appendages to the bracts and the silvery sheen on the undersides of the leaves.

Photos / Sounds

Observer

selvadero

Date

February 24, 2018 04:31 PM EST

Description

This species is very rare in Peru, recorded also at Los Amigos Biological station. It has orange flowers and differs from the form commonly found in Brazil that has red flowers. When observed it had finished flowering but was in fruit. This species goes completely dormant in the dry season and will disappear completely, surviving by the underground rhizomes and thick tuberous roots.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

February 24, 2018 11:03 AM EST

Description

This is an undescribed new species that is found in Bolivia and Peru, soon to be published. This form is similar to the cultivar Costus 'Red Feathers', but differs by having a closed labellum entrance. It was very common at this site, but not seen elsewhere. Here the sweat bees were very active, tearing into the labellum on the undersides of the flower to get at the sweet nectar within. It was difficult to find an undamaged flower.

Photos / Sounds

Observer

selvadero

Date

February 24, 2018 09:24 AM EST

Description

Flowers not seen but this is probably Dimerocostus argenteus based on bract appendages.

Photos / Sounds

Observer

selvadero

Date

February 24, 2018 09:24 AM EST

Description

This was not in flower but based on the appendages to the bracts and flowers seen at other sites I believe this is Dimerocostus argenteus.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 3, 2018 06:28 AM EST

Description

This is the plant form of the registered cultivar Costus 'El Gato'. Of the currently described species, it comes closest to Costus arabicus, but I believe it to be a separate, currently undescribed species. This was by far the most common Costus species I found in the Puerto Maldonado region. There were also a few plants in this form at higher elevations in the Quincemil area.

Photos / Sounds

What

Spiral Gingers Genus Costus

Observer

selvadero

Date

March 1, 2018 11:27 AM EST

Description

This is the plant form of the registered cultivar Costus 'El Gato'. Of the currently described species, it comes closest to Costus arabicus, but I believe it to be a separate, currently undescribed species. This was by far the most common Costus species I found in the Puerto Maldonado region.

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