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Key to Epidendrum
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=40980
![]() Show caption*© Alexis López Hernández, some rights reserved (CC BY), uploaded by Alexis López Hernández | |
![]() Show caption*© Alan Cressler: Epidendrum rigidum, Fakahatchee Strand, The Cathedral, Fakahatchee Strand Preserve State Park, Collier County, Florida 1 by Alan Cressler | |
4 Plants hanging, leaves typically concentrated throughout stems; main stems > 40 cm long; capsule 18-24 mm long with beaks 5-6 mm long | |
6 Inflorescence densely flowered; flowers not resupinate, spirally arranged; labellum not white (yellowish-orange to green); sepals and petals narrowly oblanceolate to obovate-elliptic; capsule beak obsolete | |
6 Inflorescence not densely flowered; flowers resupinate, not spirally arranged; labellum white; sepals and petals narrowly linear-lanceolate; capsule beaks to 16 mm | |
7 Roots 3-5 mm in diameter; stems 2-5 cm in length; petiole not exceeding 1.5 cm in length; leaves distributed near apex of stem; inflorescence racemose, flowers pale green to bronze-colored; [collectively widespread in a variety of habitats, NC to FL, w. to LA] | |
7 Roots 1-2 mm in diameter; stems 5-23 cm in length; petiole to 2.5 cm; leaves distributed throughout stem; inflorescence compact (nearly corymbose); flowers green to yellow; [sloughs, s. FL] |
Key to terrestrial orchids: Key to Orchidaceae
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https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39521
4 Flowers white, the lip, sepals, and petals all predominantly white. | |
4 Flowers pink, greenish, yellowish, or purplish, the lip sometimes white or marked with white, the sepals and petals colored. | |
8 Lip with 2 fleshy keels near the base; pollinia 4; plants holomycotrophic (without chlorophyll) and never with leaves | |
9 Plants never with leaves, holomycotrophic (without chlorophyll); veins of the petals and sepals strikingly different in color than the intervein areas; lip with 5-7 ridges; pollinia 8 | |
10 Plants with evident, above-ground pseudobulbs, sometimes enclosed by sheaths. | |
12 Lip broadest near its apex; inflorescence typically a more open or lax raceme; leaves to 30 cm long. | |
![]() Show caption*© Alan Cressler: Bletia patula, near Arecibo Observatory, Municipio de Arecibo, Puerto Rico 2 by Alan Cressler | |
![]() Show caption*© Alan Cressler: Spathoglottis plicata, Riviere Glace Valley, Grand Anse Department, Haiti 1 by Alan Cressler | |
10 Plants without above-ground pseudobulbs (either absent or subterranean). | |
21 Leaf basal. | |
22 Flower with a spur. | |
22 Flower without a spur. | |
26 Lip below (resupinate); flowers white, often cleistogamous; lip white with purple margins, with keels | |
26 Lip above (not resupinate); flowers purple or pink (rarely white), chasmogomous; lip with yellow fringes (beard) | |
25 Flowers relatively small, whitish; flowers arranged in densely (and sometimes also spirally) arranged spikes. | |
21 Leaf cauline. | |
29 Sepals brown to purple, linear or narrowly oblanceolate, 3-6.5 cm long, about 5 mm wide; leaf coriaceous | |
29 Sepals pink (rarely white), elliptic or oblanceolate, 1.3-2.7 cm long, 3-11 mm wide; leaf herbaceous | |
31 Leaves cauline. | |
37 Plant with aerial roots throughout stem; lip orange-red, deeply 3 to 4 lobed and marginally fimbriate; [subfamily Epidendroideae] | |
37 Plant without aerial roots throughout stem; lip variously colored, if orange then not deeply 3 to 4 lobed. | |
38 Lip with a spur; leaves linear, lanceolate, or narrowly elliptic, 5-40 cm long (at least the larger > 5 cm long, except in Aspidogyne, with lanceolate to ovate leaves 1.5-6.5 cm long). | |
31 Leaves basal (sometimes with bladeless sheaths upward on the stem). | |
43 Leaves plicate. | |
47 Leaves long petiolate, not basally sheathing stems; sepals longer (to 30 mm), narrowly lanceolate | |
51 Inflorescence a raceme; lip with pink-purple coloration along margin; flowers larger, not tightly spiraling | |
51 Inflorescence a spike; lip without pink/purple coloration along margin; flowers smaller, often spiraling or tightly assembled | |
50 Leaf blades more-or-less horizontally oriented, flat against the ground or 1-2 cm above it. | |
54 Lip without green spots (sometimes with green coloration but not green-spotted). | |
55 Large flowers distinctly pedicellate on racemes; lip short-caudate, 4.5-7 mm long; petals obliquely triangular | |
58 Lip and perianth without a central green stripe; occasionally with multiple green veins on the lip; leaf often persistent. | |
60 Lip canaliculate (grooved longitudinally), without conspicuous yellow throat; flowers greenish-brown or coppery | |