148 ORCHIDACEAE 
Leaf single. 
Oval, with a single flower having a double, 
bearded’ Jip’:) 2 Gh) (s+... St * ee 
Leaf broadly oval clasping the stem with sev- 
eral scales below. Flowers greenish Microstylis 
Grass-like, with a long cluster of yellow-brown 
flowers’ °°) SUR ss. Ure ant ee 
Plants without leaves or with inconspicuous ones. 
Flowers dull, roots coralloid . . . Corallorrhiza 
1. ‘CYPRIPEDIOM, 1. 
Plants with terminal nodding flowers. Two stamens fertile. Stigma 
in 3 lobes. Lip developed into a large inflated pouch or sac. Leaves from 
the stem or from the root, large, many nerved. 
stent) not jleaty, ) leaves idirectly, “from root (i Yay) yin et le et oc Te 
Stem leafy. 
Flowers yellow. 
Lipps ito)’2 ins long’ 3 7 sis. epi tel iets oP me earn orn reoetal OMNm na CEES 
Tip (9) to; ttin} long i. 5) hee otk) vaccum inte ee Gemma tern 7 ean 
Flowers purple. 
Petals as long or longer than the lip . . . . . . C. arietinum 
Petals shorter than the lip. 
Stemi to’ 2-ft: high’). ic. ic? he.) Mey fey ie, ven) pe Gens earn 
tenon tors) Ans HIghes 6 <8 - « « .» C. candidum 
1. C. arietinum, R. Br. (Fig. 4, pl. 17.) Ram’s Heap. Stems 8 to 
12 in. high, often in clusters. Leaves broad elliptic, petals linear, green- 
ish-brown; lip red with white veins, somewhat downy, the apex prolonged 
into a spur. Lateral sepals not united. In damp woods, most of our 
region. May-Aug. 
2. C. acaule, Ait. (Fig. 2, pl. 17.) Mocassin FrLower. Flower 
scape 10 to 14 in. high. Leaves from the base of stem, opposite, broad 
elliptic, strongly nerved. Flower 2 in. long. Petals not as long as the 
pouch-like lip. Lateral sepals more or less united. An exquisite flower. 
In damp woods. May-June. 
3. C. spectabile, Salish. (Fig. 3, pl. 17.) Snowy Lapy’s Siipper. 
(C. reginae, Walt.). Stem leafy, 2 ft. high; leaves broad lance-ovate, 
strongly veined. Sepals broad, blunt at end, not as long as the lip. Lip 
purplish white with many red veins. The most showy of our Cypripe- 
diums. In wet meadows and swamps. June-Sept. 
4. C. candidum, Willd. SMALL Wuite Lapy’s Sriiprer. Stem with 
3 or 4 broad lance-shaped leaves, 6 to 12 in. high. Sepals and petals 
longer than the lip. Lip white with purple veins within. Flower rather 
less than an inch long. Woods and swamps. May-July. 
5. C. hirsutum, Mill. (Fig. 1, pl. 17.) Larak YELLow Lapy’s Siie- 
PER. Stem leafy, 1 to 2 ft. high, hairy; leaves oval or broad lance- 
shaped. Flowers large, lip 1 to 2 in. long, greenish-yellow with purple 
stripes. Sepals long, twisted, narrow lance-shaped. Woods and thickets 
throughout our region, May-July. 
6. C. parviflorum, Salisb. Smart Lapy’s Stripper. Stems very leafy, 
about as tall as No. 5, flower smaller; lip 4 to 1} in. long, bright yellow 
