124 



KEY TO THE FAMILIES AND GENERA 



185. TACCACE.E. 

 In cultivation Tacca. 



186. IRIDACE.&. 



A. Fls. never more than 1 to a spathe, spicate, 



not fugitive. 

 B. Style-branches simple, not bifid. 



c. Stamens equilateral; perianth regular. 

 D. The style short: branches long and 



subulate. 

 E. Rootstock not bulbous; roots in 



dense tufts, fibrous, some fleshy.. . . 1. Sckizosstylis, 



EE. Rootstock bulbous 2. He&perantha. 



DD. The style longer: branches shorter and 



more or less broadened. 

 E. The spathe-valves oblong, green or 



brownish upwards 3. Geissorhiza. 



EE. The spathe-valves scarious or hya- 

 line, cut or 3-parted at apex 4. Dierama. 



EEE. The outer spathe-valve short, emar- 



ginate, membranous or papery 5. Ixia. 



cc. Stamens unilateral and arched. 



D. Foliage very hairy and plaited 6. Babiana. 



DD. Foliage not hairy and plaited. 

 E. Perianth-limb irregular. 



F. Tube funnel-shaped; spathe-valves 



lanceolate 7. Gladiolus. 



FF. Tube cylindrical in lower half, 

 suddenly dilated at the middle, 

 spathe-valves oblong-lanceolate.. 8. Antholyza. 

 EE. Perianth-limb subregular. 



F. Fls. small; no tube; segms. very 



acuminate 9. Melas- 



FF. Fls. larger; tube present; segms. [phavula. 



more or less oblong, 

 o. Spathe valves large, green, 



lanceolate 10. Atidanthera. 



GO. Spathe-valves small, oblong. 



H. Caps, inflated, globose 11. Crocosmia. 



HH. Caps, small, oblong^ 12. Tritonia. 



GOO. Spathe-valves scarious and 



deeply lacerated 13. Sparaxis. 



BB. Style-branches bifid; stamens unilateral. 

 c. Tube broadly funnel-shaped, with sta- 

 mens inserted below the throat 14. Freesia. 



cc. Tube slender with stamens inserted at the 



throat 15. Lapeyrousia. 



ccc. Tube broadly funnel-shaped above the 



middle where the stamens are inserted. . 16. Waisonia. 

 AA. Fls. usually more than 1 to a spathe, stalked, 

 often fugitive and opening one after another. 

 B. Style-branches opposite stamens and outer 



pe rianth-segms. 

 c. Stigmas transverse; style-branches have 



crests that overtop anthers. 

 D. Inner pe rianth-segms. not convolute. 

 E. Ovary 1-celled, with 3 parietal 



placentae: rootstock digitate 17. Hermo- 



EE. Ovary 3-celled. [dactylus. 

 F. Perianth-tube usually present; 

 filaments free : rootstock usu- 

 ally a rhizome, sometimes a bulb.18. Iris. 

 FF. Perianth without a tube; filaments 

 monadelphous : rootstock usu- 

 ally a tunicated corm 19. Moraea. 



DD. Inner pe rianth-segms. convolute. 



E, Style-crests petaloid: Ivs. in 2- 

 ranked rosette, not plaited: pedun- 

 cle flattened: rootstock not bulbous.20. Marica. 

 EE. Style-crests large, spur-like or flat- 

 tened : Ivs. superposed, plaited : 



st. terete: rootstock bulbous 21. Cypetta. 



(See also Phalocallis. ) 

 CC. Stigmas terminal; style-branches do not 



overtop anthers. 



D, Perianth without any tube; inner 

 segms small, not convolute; style- 

 branches bifid at tip 22. Rerbertia, 



DD. Pe rianth-segms. connivent in a cup, 



without any spreading blade 23. Hydrotsenia. 



DDD. Perianth -segms. connivent in a cup, 

 then spreading, at least the outer 

 ones. 

 E. Style-branches with 2 petal-like 



stigmatose crests 24. Homeria. 



EE. Style-branches bifid. 



F. Ditto penicillate, i.e., shaped like 

 an artist's brush, a dense tuft of 



hairs 25. Ferrarto. 



FF. Ditto hot penicillate. 



G. Inner segms. very small; outer 



with a large, reflexed blade. . . .26. Rigidella. 

 GG. Inner and outer segms. dissimi- 

 lar, various 27. Tigridia. 



BB. Style-branches alternate with anthers, 

 c. Rootstock not a bulb or corm. 



D. Spathes essentially 1-fld. 



E. Peduncle short, hidden; perianth 

 with a long tube and ascending 



segms 28. Crocus. 



EE. Peduncle long; pe riant h-degms. much 



longer than the short tube 29. Romulea. 



DD. Spathes usually with more than 1 fl 30. Nemastylis. 



cc. Rootstock not a bulb or corm: spathes 



usually more than 1-fld. 

 D. Pe rianth-segms. unequal. 



E. Inner segms. shorter, connivent; 



upper stamen imperfect 31. Diplarrhena. 



EE. Inner segms. obovate-cuneate; outer 

 oblong, usually shorter; stamens 



all perfect. 32. Libertia. 



DD. Perianth -segms. subequal. 



E. Style-branches flattened and cmargi- 



nate at apex: infl. a lax corymb. . . .33. Belemcanda. 

 EE. Style-branches subulate. 



F. Pedicels short ; clusters panicled . . .34. Orthoaan- 

 FF. Pedicels long; clusters terminal, [thus. 



single or fascicled 35. Sisyrin- 



[chium. 



Other genera described are: Aristea, Cipura, Eleutherine and 

 Enno-ulophus. 



187. AMARYLLIDACE^E. 



A. Subterranean axis a bulb: scapose: 

 infl. umbelloid and involucrate, or 



solitary 1. AMARYLLIS TRIBE. 



AA. Subterranean axis a rhizome: st. 



leafy, at least at base. 

 B. Plants with large, thick, fleshy, 

 rosette-like Ivs.: infl. racemose or 



paniculate 2. AGAVE TRIBE. 



BB. Plants with ordinary Ivs. of small 



size: infl. various. 



c. Lf.-blades inverted, upper face 

 downward: infl. an involucrate 



umbel 3. ALSTRCEMEKIA 



cc. Lf.-blades normal, linear: infl. not [TRIUE. 



umbelloid. 



D. Plant hairy or glabrous, sca- 

 pose: infl. spicate or racemose. 4. HTPOXIS I'RIBE. 

 DD. Plant glabrous, with leafy sts.: 

 infl. ioose, racemose or soli- 

 tary; anther opening by 



apical pore 5. CONANTHERA 



DDD. Plant densely woolly with [TRIBE. 



leafy sts.: infl. scorpioid: Ivs. 

 capitate 6. CONOSTYLIA TRIBE. 



1. Amaryllis Tribe. 



Subtribe 1. CORONATE. Fl. furnished with a crown between 

 the perianth and stamens, which is not to be confused with a 

 staminaJ cup formed by the growing together of filaments. 



1. Narcissus. 



Subtribe 2. AMARYLLE.E GENUINE^:. Corona 0, and filaments 

 not united into a staminal cup. 



A. Anthers erect; filaments inserted at or near the 



base of anthers. 

 B. Stamens epigynous; filaments short. 



c. The penanth-segms. all alike 2. Leucojum. 



cc. The inner segms. different, permanently 



connivent 3. Galanthus. 



BB. Stamens perigynous. 



c. Fls. solitary 4. Cooperia. 



cc. Fls. umbellate 5. Chlidanthus. 



AA. Anthers dorsifixed, versatile. 



B. Ovules many, superposed; testa black, 

 c. Fls. solitary; spathe tubular in the lower 



half. 

 D. The fl. gaping, horizontal, bright red, 



3 lower segms. convolute 6. Sprefcelia. 



DD. The fls. regular, erect or suberect. 



E. Seeds globose: fls. yellow; peduncle 



short or long 7. Sternbergia. 



EE. Seeds flat: peduncle long 8. Zephyran- 



cc. Fls. umbellate; spathe 2-4-valved, and [thea. 



pedicels subtended by filiform bracte- 

 oles. 

 D. Perianth-tube short or almost 0, rarely 



long in Hippeastrum. 



E. Peduncle solid: seeds few in a cell. ... 9. Lycoris, 

 EE. Peduncle hollow. 



F. Fl. often furnished with minute 

 scales or a distinct neck at the 

 throat: seeds many in a cell.. . . . 10. Ifippeas- 

 FF. Fl. with a sort of corolla, which is [trum. 



funnel-shaped, and deeply cut, 



the divisions emarginate 11. Placea. 



DD. Perianth-tube long. 



E. Tube broadly funnel-shaped, pulvi- 



nate at throat 12. Vallota. 



EE. Tube 2-3 times longer than segms., 



naked at throat 13. Cyrtanthus. 



