12S 



KKY TO THE FAMILIES AND GENERA 



DD. Pedicels not articulattnl iit apex. ...... .61. Triieleia. 



B. Perianth wheel-shapeti or bell-shaped; 

 seRiii:*. connate at the ha^e into n ring or 

 cup. 

 c. Kootiitock ft fibrous-tunicutcd corm. 

 D. Filaments dilatcii at bjise into truncate 



scales surrounding ovary G2. Btoomeria. 



DD. Filaments slightly dilated below the 



middle 63. Muilla. 



CC Rootj*tock a tunicateti bulb. 



D. Alliaceous odor absent ; porianth-segras. 



connate at base or to the inidtlle 04. 



DD. Alliaceous otlor nearly if not quite 

 always present; perianth-segms, dis- 

 tinct or barely united at ba.se in a 

 ring 65. 



Nothoscor- 

 \(ium. 



Alliun 



14. Squill Tribe. 



A. Perianth-segms. distinct, or united only at 

 the very base. 

 B. Seeds strongly compressed; ovtilea numer- 

 ous. 

 C. The outer segms. of the persistent peri- 

 anth spreading, the inner a little 

 shorter, erect, connivent at apex and 



variously crested 66. Albuca. 



CC. The segms. of the deciduous perianth sub- 

 equal, connivent into a bell, or spread- 

 ing 67. Urginea. 



BB. Seeds obovoid or globose, not flattened or 

 angled: ovules 2-ao in a cell. 

 c. Infl. a long dense raceme, bearded at the 

 apex by empty bracts, which may be 



herbaceous or colored 68. Eucomis. 



CC. Infl. not as in c. 



D. Ner\*es of perianth-segms 1 69. Scilla. 



DD. Nerves of perianth-segms. 3-co 70. Camassia. 



ODD. Nerves of perianth segras. obscure 71. Ormthog- 



^A. Perianth-segms. united into a tube or bell. [alum. 



B. 0\'ule9 00, usually numerous. 



c. Seeds strongly compressed or angled. 

 D. The outer lobes spreading; inner ones 



erect and shorter 72. Dipcadi. 



DD. The lobes all spreading and subequal, 



or the inner ones a little wider 73. Galtonia. 



CC. Seeds obovoid or globose 74. Lachenalia. 



BB. Ovules 2-6 in a cell, rarely more; seeds not 

 flattened or angled. 

 c. Lobes very short, tooth-Uke, much shorter 

 than tube. 



D. Perianth cylindrical 75. Vellheimia. 



DD. Perianth urn-shaped, constricted at 



throat 76. Muscari. 



cc. Lobes considerably longer than the bell- 

 shaped tube; fls. few, in a lax raceme. 

 D. Filaments erect, not connate, all or only 



alternate ones dilated and petal-like. .77. Chionodoxa. 

 DD. Filaments connate into a sort of cup 

 which is produced beyond the anthers 



into a cone. 78. Puschkinia. 



CCC. Lobes shorter than the tube or about as 

 long, sometimes a trifle longer; filaments 

 normal or dilated at base 79. Hyacinthus. 



17. Colchicum, or Autumn- Crocus Tribe. 



K. Perianth-tube entire; styles 3, distinct from 



the base 89. Colchicum. 



AA. Perianth-segms. with distinct claws, collDivent 

 into a tube. 



B. Styles 3, distinct from base 90. Merendera. 



BB. Style entire inside the tube, 3-fid at apex. , . . 9L Bulboco- 



[dium, 



18. Narthecium Tribe. 



A. Caps, loculicidally dehiscent. 



B. Style undivided 92. Narthecium. 



BB. Styles 3 93. Zeropkyl- 



AA. Caps, septicidally dehiscent or parted. {lum. 



B. Fls. few at apex of scape; style undivided. . . . 94. Heloniopais. 



BB. Fls, in a dense raceme; styles 3, very short. . 95. Helonias. 



19. Bellwort, or Uvularia Tribe. 



A. Fr. an indehiscent berry 96. Disporum. 



AA. Fr. a septicidal caps 97. Tricyrtis. 



AAA. Fr. (when known) a loculicidal caps. 

 B. Fls. terminal, pendulous. 



c. Lvs. perfoliate: seeds covered by a thin 



white aril 98. Uvularia, 



CC. Lvs. sessile; seeds have a swollen, spongy, 



brown ridge 99. Oakesia. 



BB. Fls. axillary, or long-pedicelled in the axils, 

 c. Plants are climbers. 



D. Perianth-segms, spreading, usually 



wavy or crisped 100 Gloriosa, 



DD. Perianth-segms. distinct, suberect, more 



or less connivent and bell-shaped 101. Littonia. 



CC. Plants not cHmbers: periath urn-shaped; 



lobes very short 102. Sander- 



[sonia. 



20. False Hellebore or Veratrum Tribe. 



A. Seeds membranous-winged nearly all the way 

 around: sts. leafy. 

 B. Lvs. narrow or long-stalked : perianth-segms. 



distinctly clawed 103. Melan- 



BB. Lvs. usually broad, plaited, veiny, con- [thium, 

 tracted into a sheath, not distinctly 

 stalked : perianth-segms. a trifle con- 

 tracted at the base 104. Veratrum, 



AA. Seeds narrow, angled, hardly winged : lvs. 

 radical or crowded at base of st., linear or 

 rarely sublanceolate. 

 B. Stamens much shorter than perianth; i>er- 



ianth more or less bell-shaped 105. Stenan- 



BB. Stamens a little shorter than perianth; per- \thium, 



ianth flattened out 106. Zygadenua. 



Other genera described are: Acrospira. Alectorurus, Andro- 

 cymbiura, Arthropodium, Astelia, Chamielirium, Dipidax, 

 Drimia, Leucocoryne, Massonia, Oligobotrya, Peliosanthes, 

 Thysanotus, Tofieldia, Tupistra, and Tulbaghia. 



15. Tulip Tribe. 



A. Caps, septicidally dehiscent or 3-parted: fls. 

 erect or pendulous; outer perianth-segms. 

 usually narrower or smaller; inner ones 



pitted 80. Calochortus. 



(Consult also Cyclobothra.) 

 AA. Caps. loculicidally dehiscent. 



B. Anthers dorsifixed, versatile; fls. nodding or 

 pendulou.'i, rarely erect; claw of segms. 

 usually furnished with a nectariferous 



groove 81. Lilium, 



BB. Anihf-rs basifixed, erect; filament usually 

 intruded. 

 c. Fls. u.sually erect; perianth bell-shaped or 

 somewhat funnel-shaped; segms. often 



spotted near the ba^e, not pitted 82. Tulipa. 



CC. Fls. nodding or pendulous. 



D, Perianth bell-shaped; segms. usually 

 furnished with a pit or nectar-bearing 



spot above the base 83. Fritillaria. 



DD. Perianth-segms. narrow, recurved or 

 reflect*-d from the middle or almost 



from the base 84. Erythro- 



\nium, 



16. Medeola, or Cucumber-Root Tribe. 



A. Foliage at baae of st. ; lvs, few, stalked or con- 

 tracted into a sheath: fls. in a long-peduncled 



um^xfl. rarely solitary 85. CUntonia. 



AA. Foliage whorled at top of st. 



B. Lvs, 3: fl. solitary. ."Vmerous 86. Trillium. 



BB. Lv». 4-oD : flu, solitary, 4-«>-merous 87. Paris. 



AAA. Foliage whorled at miridle of st, with 3 smaller 



lvs. at the top surrounding the umbel 88. Medeola. 



195. PONTEDERIACEiE. 



A. Perianth funnel-shaped. 



B. Ovary by abortion l-celled, 1-ovviIed. ..... 1. Pontederia. 



BB. Ovary 3-celled, many-ovuled 2. Eichhornia. 



AA. Perianth salver-shaped 3, Heteranthera. 



196. COMMELINACE^. 



A. Fr. indehiscent. 



B. Pericarp hard and brittle 1. Pollia. 



BB. Pericarp sufrulfnl or fleshy 2. Palisota, 



AA. Frs. loculi'itlally <li'|ii.sri-nt. 



B. Fls. with .i pi rfcet .stamens, and 3 or fewer 

 staminodes. 

 c. Anther-cells parallel and contiguous. 

 D. Ovary 3-celled; 2 anterior cells 1-2- 

 ovuled; posterior 1-ovuled, empty or 



wanting 3. Commelina, 



DD. Ovary 2-3-celled; cells usually 2-^~ 



ovuled 4. Aneilema. 



CC. Anthers, with variously petaloid connec- 

 tive cells spirally twisted into numer- 

 ous gyres 5. Cochlios- 



BB. Fls. with 6 stamens, rarely 5, all perfect; no [tema, 



staminodes. 

 c. Anth<T-crIls rU-hiscing by a terminal pore. 6. Dichori- 

 cc. Anthers citlicrwise dehiscent. [sandra, 



D. Connective transversely or divaricately 



2-Iobed 7. Zebrina. 



DD. Connective not 2-lobed as in d, 

 E. Ovary-cells 2-5-ovuled. 



