ENDO&ENS. 45 



152 ; pollinia, Fig. 171 ; cell, Pig. 217, D. O. spectdbilis, fls. pink- 

 purple, lip white ; spioate. Woods, N. XJ. S. 3. Ophrys. Spurless ; 

 lip usually convex. Numerous species in Mediterranean States. Few 

 in Gt. Brit. ; among these are O. apifera, Bee 0. ; lip resembling a 

 bee ; O. museifera, Fly 0. ; fl. resembling a fly. Both in dry pastures, 

 southeastern counties. 



Tribe 6. Vkndeae. — Largest and finest Tribe. Most epiphytal. 1. 

 Peristferia. Pseudo-bulbs ; large plicate Ivs. ; radical oo-flowered 

 scapes with handsome globular fieshy fls. 4 species. P. eldta, El 

 Spiritu Santo, Holy Ghost Flower, Dove Orchis. Terrestrial. 

 Lvs. 3°-3J° long, 6' wide; flower-stalk 4°-6° high, J of its length 

 occupied by a spike of cream-white, fragrant fls., each fl. 1 J' across. 

 Single fl.. Fig. 153, A. Panama. 2. Angraecum. Fl. spurred. 

 Epiphytal on trees. Trop. Af. and its islands, W. Ind. A. sesgui- 

 pedale, fl. dark crimson, more than 1° long, including its spur. Mada- 

 gascar. Many leafless species. 3. Oncidium. Epiphytal. 200 

 species, tropical Am. Varied, but sepals always spreading. O. Pa- 

 pUio, Butterfly Orchid. Stemless ; fls. single, richly colored, at the 

 end of long stalks ; resembling a butterfly. Trinidad, Venezuela. O. 

 alUssimum, fls. yellow, with brown spots ; raceme 13° long. W. Ind. 

 O. corynephorum, fls. with crimson and white lip, on a twining scape 

 20° long. Peru. 4. Br&ssia. Many species, varied, but lateral sepals 

 very long; fls. more or less yellow, racemed. Near Oncidium. Trop. 

 Am. 5. Cycnoches, Swan Orchis. Terrestrial; fls. swan-like. 

 Several species, all with variable fls. Trop. Am. C. ventricosum, fls. 

 greenish white, racemed. Single fl.. Fig. 153, A. 6. V4nda. Epi- 

 phytal ; splendid genus, about 20 species. Trop. Asia. Lvs. often 2° 

 long. Fls. large, elegantly colored, in erect or pendulous racemes. 7. 

 Comparettia. Epiphytal ; fine genus, 4 species, with pseudo-bulbs, 

 coriaceous lvs., and graceful racemes of long-spurred fls., rose, purple, 

 or scarlet. Trop. Am. C. coccinea, Dancing Orchis. See Lesson 

 XXI., 238. 8. Phalsnopsis amdbilis, Indian Butterfly. Epi- 

 phyte, stemless. Fls. large, racemed on a long stalk ; petals and sepals 

 pure white ; lip smaller, with 2 long, twisted tendrils, imitating an- 

 tennae ; fls. resembling a flock of butterflies. Several other handsome 

 species, all of Ind. Archipelago. 



Tribe 7. Epldendreae. — Usually epiphytes. 1. Epidendrum. 300 

 species, varied, but nearly all epiphytal, showy. Trop. Am. E. 

 nemordle, fls. large, rose, in panicles ; E. vitellinum, fls. deep orange 

 color; both Mexican. E. conopseum, small, with racemed greenish- 

 purple fls. ; epiphytal on Magnolia. S. Oar., S. andW. 2. Cattleya, 

 epiphytal. Many fine species, Centr. Am., Brazil, on trees, rocks. 

 Pis. 6' across, rose, sometimes yellow, two or more in the axil of 2 

 fleshy lvs. from a pseudo-bulb. C. Schilleridna, fls. yellow, with 

 crimson spots. 3. Laelia, close to Cattleya ; epiphytal ; fls. showy, 

 few or many on scapes. Several species, Brazil, Mex. 



Tribe 8. Malaxideae. — Epiphytes, rarely terrestr. 1. Corallorhiza, 

 rhiz. branched, coral-like. Leafless, brown. Sepals and petals nearly 

 equal. Spur short. On roots of trees. Pew species. N. Am., Eur., 

 N. Asia. C. odontorhlza, fls. in a spike ; small, brown-green, lip 

 white. Can., to Car. and Kj'. 4 others in IT. S. 2. Aplectrum 

 hyemdle, only species, Putty-Root, Adam and Eve. Tubers with 

 a putty-like mucilage. Terrestrial. Scape and dull fls. in summer ; 



