Heartleaf Twayblade (Bruce Peninsula Orchids)

Heartleaf Twayblade

Neottia cordata

Summary ⁴

Neottia cordata, lesser twayblade or heartleaf twayblade is an orchid of upland bogs and mires that rarely exceeds 15 cm in height. It was formerly placed in the genus Listera, but molecular phylogenetic studies have shown that Neottia nidus-avis, the Bird's-nest Orchid, evolved within the same group.

Description ⁵

Plants 5–33 cm. Stems green to reddish purple, succulent, glabrous. Leaves: blade broadly to narrowly ovate-cordate or deltate, 0.9–2(–4) × 0.7–2(–3.8) cm, apex mucronate. Inflorescences 5–25-flowered, lax to dense, 20–100 mm, slender; floral bracts ovate, 1–1.5 × 1 mm; peduncle and rachis slightly glandular-puberulent or glabrate; bracts, pedicel, and ovary glabrous. Flowers yellow-green, green, or reddish purple; pedicel slender, 2–3 mm; dorsal sepal ovate-oblong to oblong-elliptic, 2–3 × 1 mm, apex obtuse; lateral sepals ovate-oblong to oblong-elliptic, slightly falcate, 2–3 × 0.5–1.5 mm, apex obtuse; petals elliptic to oblong-linear, 1.5–2.5 × 0.5–1 mm, apex obtuse; lip linear-oblong, cleft 1/2 –2/3 its length into 2 linear-lanceolate lobes, 3–4 × 1–1.5 mm; disc with pair of spreading, linear lobes, apices acute; column 0.5 × 0.5 mm. Capsules semierect, subglobose, 5 × 4 mm.

Sources and Credits

(c) Matt Bowser, some rights reserved (CC BY), uploaded by Matt Bowser
(c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar
(c) Adam Huggins, some rights reserved (CC BY-NC), uploaded by Adam Huggins
Adapted by bpff from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Neottia_cordata
(c) Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/5018751

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