MELANTHACE^E. (COLCHICUM FAMILY.) 485 



10. YUCCA, L. SPANISH BAYONET. 



Perianth cup-shaped, corolla-like, 6-leaved. Sepals and petals nearly alike, 

 late-deciduous. Stamens 6, with thick granular club-shaped filaments : anthers 

 small, oval. Ovary 3-celled, 3-sided, grooved at the angles. Stigmas 3, nearly 

 sessile, oblong, concave, 2-cleft. Ovules numerous, in two rows, the rows sep 

 aratcd by a false partition. Capsule oblong, 6-celled, pulpy and indehiscent, or 

 dry and loculicidally 3-valved at the apex. Seeds numerous, flat, horizontal, 

 smooth and black. Plants with thick palm-like leafy stems (caudex), numer- 

 ous rigid and spine-pointed leaves, and white showy panicled flowers. 



* Stem short : capsule dry, 3-valved. 



1. Y. fllamentosa, L (BEAR-GRASS ) Stem short and leafy; leaves 

 rather rigid, spreading or recurved, varying from linear to broad-lanceolate, 

 green or glaucous, with thread-like filaments on the margins ; scape elongated, 

 branching and pubescent above ; leaves of the perianth ovate-lanceolate, white 

 tinged with yellow or purple ; capsule with 3 rounded angles, loculicidal at the 

 apex, and at length separating at the inflexed sutures into three 2-celled carpels. 

 (Y. puberula and Y. glaucescens, Haw.) Light or sandy soil, Florida to North 

 Carolina, and westward. June. Stem rarely more than a foot above the 

 ground. Leaves 1 - 2 long. Scape 4 - 6 high. 



* * Stem tall : capsule, pulpy, 6-angled, indehiscent. 



2. Y. gloriosa, L. Stem mostly simple, leafy at the summit; leaves 

 linear-lanceolate, rigid, smooth on the margins; panicle large, smooth, pyrami- 

 dal, short-peduncled ; flowers white, single or clustered ; leaves of the perianth 

 lanceolate, acute. Drifting sands along the coast, Florida to North Carolina, 

 and westward. May and June. Stem 2 -4 high. Leaves 1-1^ long. 

 Panicle 2 -3 long 



3. Y. aloifolia, L, Stem mostly branching, leafy above; leaves linear- 

 lanceolate, very rigid, strongly spine-pointed, very rough on the margins, the 

 lower ones reflexed ; panicle short, smooth, densely flowered, nearly sessile ; divis- 

 ions of the perianth ovate-lanceolate, white tinged with purple. (Y. Draconis, 

 L. Y. serrulata, Haw.) Sands along the coast, Florida to North Carolina. 

 May and June. Stem 4 - 8 high. Leaves and panicle 1- 1 long. 



4 Y. recurvifolia, Salisb. Leaves linear-lanceolate, recurved, with the 

 margins sometimes filamentose ; interior leaves of the perianth wider than the 

 exterior. On the sea-coast of Georgia, Elliott. July and Aug. Stem about 

 3 high. Flowers white, tinged occasionally with green and purple ( * ) 



ORDER 152. MELANTHACE-^E. (COLCHICUM FAMILY.) 



Perennial herbs, with parallel-nerved leaves, and regular flowers. 



Perianth of 6 nearly equal divisions, free from or coherent with the base 



of the 3-celled ovary. Stamens 6 (in Pleea 9-12), inserted on the base of 



the perianth : anthers extrorse (except in Tofieldia and Pleea). Styles 



41* 



