PAPHIOPEDILUM 



yellow; lip brown-purple above, pale yellow beneath. 

 Feb-May. Malay Archipelago. G.C. III. 19:329. 

 Gt.43, p. 520. R. 1:3. 



10 St6nei, Pfitz. (Cypripedium Stonei, Hook.). Lvs. 

 up to IK ft. long: scape up to 2 ft. tall, greenish purple, 

 pubescent, 3-5-fld.; fls. about 4 in. greatest diam.; 

 dorsal sepal cordate, acuminate, white, with usually 

 2 or 3 dark crimson streaks; petals 5-6 in. long, linear, 

 twisted, sparsely ciliate at base, the lower two-thirds 

 pale tawny yellow, crimson-spotted, the remainder 

 crimson; lip dull rose, veined and reticulated with 

 crimson, the narrow infolded lobes whitish; stamino- 

 dium fringed except hi front. Autumn. Borneo. B.M. 

 5349. I.H 10:355. F.S. 17:1792, 1793. L. 6:281. Var. 

 acrosepalum, Reichb. f. Dorsal sepal narrower than in 

 type, the lateral sepals free. Var. Cannaertianum, Hort. 

 Dorsal sepal white; petals longer than in the type, 

 creamy white with a central line of chocolate spots. 

 Var. platytanium, Reichb. f. Fls. larger, the petals 

 much broader, white, spotted with yellow and purple, 

 the apex carmine. G.C. 1867:1118. F.M. 1880:414. 



SECTION III. 

 A. Scape several-fid. 



B. Fls. all appearing at same time: 



hs. nearly erect. 

 c. Petals with hairy warts, narrow, 



pendent, much twisted 11. Parishii 



CC. Petals without warts, dilated at 



apex, divaricate. 



D. Staminodium cordate, with a 

 tooth in the sinus; apex of 

 petals 4 times broader than 



lower half 12. Lowei 



DD. Staminodium oval, 2-lobed; 

 petals but little broader at 



apex 13. Haynaldi- 



BB. Fls. appearing in succession: Irs. [anum 



recurred. 

 c. Lvs. green, more or less netted. 



D. Pouch long and narrow 14 



Victoria- 



[Mariae 



DD. Pouch short and broad 15. Chamber- 



[lamianum 

 glaucophyl- 

 [lum 



cc. Lvs. glaucous, not netted 16 



AA. Scape 1-, very rarely 2-, fid. 



B. Lvs. not netted or reticulated: sepals 



always netted. 

 c. Staminodium not lunate. 



D. The staminodium with 3 pro- 

 tuberances 17. hirsutis- 



DD. The staminodium with 1 pro- [simum 



tuber ance. 



E. Margins of staminodium flat; 

 petals flat or but slightly 

 undulate on margins. 

 F Petals dilated; stamino- 

 dium obcordate. 

 G. Ovary white -vitto us; 

 petals much dilated, 

 the upper part almost 



orbicular 18. villosum 



GG. Ovary purple hairy. 



H. Staminodium pilose 



above. 



I. Dorsal sepal much 

 larger than lower 



sepals 19. insigne 



n. Dorsal sepal about 

 as long as lower 



sepals 20. exul 



HH. Staminodium gla- 

 brous 21. Charles- 



FF. Petals elliptic; stamino- [worthii 



dium cordate 22. Druryi 



EE. Margin, the posterior, of 

 staminodium resolute; pet- 

 als strongly undulate on 



margin 23. Spicerianum 



cc. Staminodium lunate 24. Fairieanum 



BB. Lvs. netted or reticulated. 



c. Petals manifestly dilated above. [anum 



D. Staminodium umbonate 25. Appletoni- 



PAPHIOPEDILUM 



DD. Staminodium not umhonate. 

 E. Lvs. pale beneath, shorter 



than scape. 



F. Sepals not reticulated. 

 G. Petals, the upper mar- 

 gin with warts; stam- 

 inodium nearly rhom- 

 boid 26. 



QG. Petals without warts. . . . 27. 

 FF. Sepals manifestly reticu- 

 lated 28. 



EE. Lvs. violet-marbled beneath, 



about as long as scape 29. 



cc. Petals not or but little dilated above. 



D. Margin of petals naked or cili- 



ate, but without spots or warts. 



E. Sepal -nerves numerous, 



close. 

 F. Front of lunate stamino- 



dium 2-lobed. 



G. Petals with upper mar- 

 gin naked 30. 



GG. Petals ciliate on both 



margins. 



H. Dorsal sepal obtuse.. .31. 

 HH. Dorsal sepal acute or 



acuminate. 



I. Sinus of stamino- 

 dium not 3- 

 toothed; dorsal 

 sepal ovate, acute.32. 

 n. Sinus of stamino- 

 dium 3-t oothed; 

 dorsal sepal near- 

 ly orbicular, long- 

 acuminate 33. 



FF. Front of staminodium not 



2-lobed, nearly orbicular . 34. 



EE. Sepal-nerves few, distant 35. 



DD. Margin of petals with spots or 



warts bearing tufts of hairs. 

 E. Petals somewhat falcate or 

 deflexed, their upper sur- 

 face marked with numerous 

 spots or warts. 



F. Margin of petals with 

 numerous approximate 

 warts or spots. 

 G. Lip longer than the 

 petals, obliquely de- 

 scending 36. 



GG. Lip equaling or shorter 

 than the petals, directly 

 descending. 



H. Claw of the lip less 

 than half as long as 



the sac 37. 



HH. Claw of the lip half as 



long as the sac 38. 



FF. Margin of petals with few 



large warts ._ . 39. 



EE. Petals sigmoid, or curved in 



two directions, their upper 



surface spotless or with 



few spots. 



F. Upper margin of petals 



only with warts. 

 G. Lower sepal elliptic- 

 ovate, obtuse; lobes of 

 lip with small warts . . . 40. 

 GG. Lower sepal narrowly 

 ovate, acute; lobes of 

 lip with large warts. ... 41. 

 FF. Upper and lower margins 



of petals with warts 42. 



2465 



Bullenianum 

 Volonteanum 



Hookerae 

 venustum 



tonsum 



Mastersi- 



[anum 



javanicum 



Dayanum 

 purpuratum 



Curtisii 



ciliolare 



superbiens 

 Argus 



barbatum 



callosum 



Lawren- 



[ceanum 



11. Parishii, Pfitz. (Cypripedium Pdrishii, Reichb. 

 f.). Lvs. oblong-ligulate, up to 16 in. long and 2>i in. 

 wide, bright green: scape 4-8-fld., pale green, downy; 

 fls. about 3 in. across; dorsal sepal oblong-elliptic, pale 

 yellow, green-veined, the upper part bent forward, the 

 basal lateral margins revolute; petals twisted, linear, 

 4-6 in. long, pendulous, the basal part green, with few 

 blackish dots, the upper half blackish purple, pale- 

 margined; lip deep green, often stained brown-purple; 



