290 LEUCOJACEAE 



6. Atamoaco Texana (Herb.) Greene. Bulbs subglobpse, about 2 cm. in diameter, 

 neck 2.5-3.5 cm. long : leaves basal, 3-4 ; blades narrowly linear, 5-10 cm. long, usually 

 3-4 together : scape very slender, 1-2 dm. tall, terete : spathe much surpassing the ovary, 

 about 2.5 cm. long: perianth yellow, somewhat coppery and striped with purple without, 

 2.5cm. long; lobes cuneate, acute, about 6 mm. wide: capsules about 1 cm. broad, de- 

 1 pressed. 



On prairies, Texas. Summer. 



7. COOPERIA Herb. 



Acaulescent herbs, with coated bulbs and glabrous foliage. Leaves basal : blades 

 very narrow, grass-like. Scape erect, simple, 1-flowered, often shorter than the leaves. 

 Perianth subtended by a bract-like spathe, salverform : tube elongated-cylindric or 

 slightly dilated at the top : lobes 6, spreading above. Stamens 6 : filaments adnate to the 

 throat of the perianth-tube : anthers narrow, erect, not versatile. ' Ovary 3-celled : style 

 filiform : stigma slightly 3-lobed. Ovules numerous in 2 rows in each cavity. Capsule 

 depressed, 3-lobed, loculicidally 3-valveot. Seeds numerous, black. PRAIRIE LILY. 



Neck of the bulb less than 4 cm. long : perianth-tube over 7 cm. long : ovary sessile. 1. C. Drummondii. 

 Neck of the bulb over 5 cm. long : perianth-tube less than 5 cm. long : ovary stalked. 2. C. pedunculate,. 



1. Cooperia Drummondii Herb. Bulbs subglobose, 2.5 cm. in diameter ; neck 

 short : leaves basal ; blades narrowly linear, erect, 1-3 dm. long : scape 1.5-3 dm. long, 

 fragile, terete : perianth whitish ; tube very slender, 7-13 cm. long ; lobes ovate, elliptic or 

 oval, 1-2 cm. long, acute : ovary sessile : capsule about 1 cm. in diameter. 



On prairies, Texas to New Mexico and adjacent Mexico. 



2. Cooperia pedunculata Herb. Bulbs subglobose, mostly 2.5-3 cm. in diameter ; 

 neck 5-7.5 cm. long : leaves basal ; blades narrowly linear, 1-3 dm. long, 2-5 mm. broad : 

 scape 1-2 dm. long, simple : perianth whitish ; tube slender, 3.5-4 cm. long, slightly di- 

 lated above ; lobes about as long as the tube, oval or broadest a little above or below the 

 middle : ovary short-pedicelled : capsules about as large as those of the preceding species. 



On prairies, Texas. Spring. 



8. CRINUM L. 



Succulent acaulescent herbs, with large bulbs. Leaves basal, persistent : blades linear 

 or slightly broadened upward, spreading or arching. Scape erect, often solitary, top- 

 ped by an umbel of 2-6 flowers. Spathe 2-valved, broad. Perianth white, showy : tube 

 elongated : lobes narrowed upward. Stamens 6, exserted : filaments distinct, filiform, 

 elongated : anthers linear, versatile. Ovary 3-celled : style slender, elongated : stigma 

 entire. Capsule bursting and exposing the green corm-like seeds. 



1. Criiium Americanum L. Bulb 7.5-10 cm. in diameter, with a short neck : 

 leaves basal ; blades linear, 6-12 dm. long, strap-like, arching, denticulate : scape erect, 

 3-7 dm. tall, surmounted by 2-4 flowers : perianth showy ; lobes white, linear or linear- 

 lanceolate, 5-12 cm. long, acute ; tube green, as long as the lobes or longer. 



In river swamps, Georgia to Florida, Louisiana and Texas. Spring and summer. 



9. HYMENOCALLIS Salisb. 1 



Acaulescent fleshy herbs, with coated bulbs. Leaves basal : blades linear or nearly so, 

 often strap-like. Scape terminated by a single flower or an umbel, with membranous bracts. 

 Perianth showy : tube elongated, slender : lobes narrow, nearly equal, spreading. Stamens 

 6 : filaments adnate to the perianth- tube, above which they are connected by a thin cup-like 

 or saucer-shaped crown : anthers narrow, versatile. Ovary 3-celled : style filiform, ex- 

 serted : stigma nearly entire. Ovules 1 or 2 in each cavity. Capsule thick, rather fleshy. 

 Seeds green and fleshy, 1 or 2 in each cavity. SPIDER LILY. 



Perianth-tube 13 cm. long or more. 1. H. Caymanensis. 



Perianth-tube 10 cm. long or less. 



A. Scapes terminated by several flowers : bulbs 3-10 cm. in diameter or more. 



Leaf-blades 4.5 cm. broad or more. 2. H. Caribaea. 



Leaf-blades 3.5 cm. broad or less. 



a. Leaves green ; blades 18-24 mm. broad. 



Staminal crown 4.5 cm. broad or more : species Caroliiia-Floridian. 3. H. rotatum. 

 Staminal crown less than 4.5 cm. broad : species Texan. 4. //. Galvestonensis. 



1 Contributed bv Dr. J. N. Rose. 



