128 



KEY TO THE FAMILIES AND GENERA 



DD. Pedicels not articulated at apex 01. Triteleia. 



BBB. Perianth wheel-shaped or bell-shaped; 

 segms. connate at the base into a ring or 

 cup. 



c. Rootstock a fibrous-tunicated conn. 

 D. Filaments dilated at base into truncate 



scales surrounding ovary 62. Bloomeria. 



DD. Filaments slightly dilated below the 



middle 03. Muilla. 



CC. Rootstock a tunicated bulb. 



D. Alliaceous odor absent ; perianth-segms. 



connate at base or to the middle 04. Nothoscor~ 



DD, Alliaceous odor nearly if not quite [dwn. 



always present ; perianth-segms. dis- 

 tinct or barely united at base in a 

 ring 05. AUium. 



14. Squill Tribe. 



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



the very base. 



B. Seeds strongly compressed; ovules 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. 



CC. The segms. of the deciduous perianth sub- 

 equal, connivent into a bell, or spread- 

 ing 07. 



BB. Seeds obovoid or globose, not flattened or 



angled; ovules 2-o in a cell, 

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

 apex by empty bracts, which may be 



herbaceous or colored 68. 



cc. Infl. not as in c. 



D. Nerves of perianth-segms 1 69. 



DD. Nerves of perianth-segms. 3-o> 70. 



DDD. Nerves of perianth segms. obscure 71. 



A. Perianth-segms. united into a tube or bell. 

 B. Ovules oo, usually numerous. 



c. Seeds strongly compressed or angled. 

 D. The outer lobes spreading; inner ones 



erect and shorter 72. 



DD, The lobes all spreading and subequal, 



or the inner ones a little wider 73. 



cc. Seeds obovoid or globose 74. 



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



flattened or angled. 



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

 than tube. 



D. Perianth cylindrical 75. 



DD. Perianth urn-shaped, constricted at 



throat 76. 



cc. Lobes considerably longer than the bell- 

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

 r>. Filaments erect, not connate, all or only 



alternate ones dilated and petal-like . . 77. 

 DD. Filaments connate into a sort of cup 

 which is produced beyond the anthers 



into a cone 78. 



ccc. Lobes shorter than the tube or about as 

 long, sometimes a trifle longer; filaments 

 normal or dilated at base 79. 



Albuca. 

 Urginea. 



Eucomis. 



Scitta. 

 Camasaia. 



Ornithog- 



[tilum. 



Dipcadi. 



GaUonia. 

 Lachenalia. 



Veltheimia. 



Muscari. 



Chionodoxa. 

 Puachkinia. 

 Hyacinthus. 



17. Colchicum, or Autumn-Crocus Tribe. 



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



the base 8 9. Colchicum. 



AA. Perianth-segms. with distinct claws, connivent 

 into a tube. 



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



BB. btyle entire inside the tube, 3-fid at apex 91. Bulboco- 



\dium. 



18. Narthecium Tribe. 

 A. Caps, loculicidally dehiscent. 



B. Style undivided 92. Narthecium. 



m. Styles 3. 93. i mpkvt . 



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



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



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



19. Bellwort, or Uvularia Tribe. 



A. Fr. an mdehiscent berry %. Dispomm. 



AA. Fr. a septicidal caps 97. Tricyrtis. 



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

 B. Fls. terminal, pendulous. 



c. Lvs. perfoliate: seeds covered by a thin 



whitearil... 98 . Ueularia. 



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. renanth-segms. distinct, suberect, more 



or less connivent and bell-shaped 101. Liltonia. 



cc. Plants not climbers: 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: Ivs. 

 radical or crowded at base of St., linear or 

 rarely sublanceolate. 



B. Stamens much shorter than perianth; per- 

 ianth more or less bell-shaped 105. Slenan- 



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



ianth flattened out 106. Zygadenus. 



Other genera described are: Acrospira, Alectorurus, Andro- 

 cymbium, Arthropodium, Astelia, Chamsclirium, Dipidax, 

 Drnma, Leucocoryne, Massonia, Oligobotrya, Peliosanthes, 

 Thysanotus, ToBeldia, 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 

 pendulous, rarely erect; claw of segms. 

 usually furnished with a nectariferous 



groove 81. Lilium. 



BB. Anthers basifixed, erect; filament usually 



intruded. 



c. Fls. usually erect ; perianth bell-shaped or 

 somewhat funnel-shaped; segms. often 



spotted near the base, 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 

 reflected from the middle or almost 



from the base 84. Erylhro- 



[nium. 

 16. Medeola, or Cucumber-Root Tribe. 



A. Foliage at base of St.; Ivs. few, stalked or con- 

 tracted into a sheath : fls. in a long-ped uncled 



umbel, rarely solitary 85. Clintonia. 



AA. Foliage whorled at top of st. 



B. Lvs. 3: fl. solitary, 3-merous 86. Trillium. 



BB. Lvs. 4-o : fls. solitary, 4-oo-merous 87. Paris. 



AAA. Foliage whorled at middle of st. with 3 smaller 



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



195. PONTEDERIACE.E. 



A. Perianth funnel-shaped. 



B. Ovary by abortion 1-celled, 1-ovuled 



BB. Ovary 3-celled, many-ovuled 



AA. Perianth salver-shaped 



1. Pontederia. 



2. Eichhornia. 



3. Metcrtin".< r<i. 



196. COMMELINACE.E. 



A. Fr. indehiscent. 



B. Pericarp hard and brittle 1. Pallia. 



BB. Pericarp succulent or fleshy 2. Palisota. 



AA. Frs. loculicidally dehiscent. 



B. Fls. with 3 perfect 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. Commtlina. 



DD. Ovary 2-3-celled; cells usually 2-oo- 



ovuled 4. Atlrili m,;. 



cc. Anthers, with variously petaloid connec- 

 tive cells spirally twisted into numer- 

 ous gyres 5. Cochlioa- 



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



staminodes. 



c. Anther-cells dehiscing by a terminal pore . 6. Lticlmri- 

 cc. Anthers otherwise dehiscent. \mndra, 



D. Connective transversely or divaricately 



2-lobed 7. Zebrina. 



DD. Connective not 2-lobed as in D. 

 E. Ovary-ceils 2-5-ovuled. 



