OF ARTS AND SCIENCES. 219 



Tribe VIII. Hemerocallideae. Flowers large, on naked jointed pedicels 

 with conspicuous bracts, simply racemose upon a leafy stem from a tunicated bulb 

 (or fleshy-fibrous roots) : perianth funnel-form, 6-cleft : stamens on the throat ; 

 anthers versatile : seeds (in our genus) horizontal, flattened, numerous, black. 



23. Hesperocallis. Perianth white, cleft to below the middle ; 

 segments several-nerved. Anthers linear. Capsule ovate-oblong, 

 deeply lobed. Raceme few-flowered, the stout pedicels jointed at 

 the summit. 



Tribe IX. Yucceae. Flowers racemose-paniculate upon a stout leafy or 

 leafy-bracteate stem from a stout caudex or thick and often branching rootstock ; 

 segments distinct : anthers versatile, sagittate : seeds numerous, in 2 rows in 

 each cell, horizontal, flattened, black. Leaves numerous and crowded, linear, 

 thick and more or less rigid : pedicels jointed at the summit. 



24. Hesperaloe. Perianth narrowly cylindric, reddish; segments 

 linear, about 7-nerved. Filaments subulate-filiform, smooth ; 

 anthers linear-oblong. Style filiform, deciduous ; stigma small, 

 capitate. Capsule loculicidal, 3-celled. Caudex very short, 

 sending up a slender sparingly bracteate flowering stem : leaves 

 linear, deeply channelled, with filiferous margins : flowers fas- 

 cicled, erect. 



25. Yucca. Perianth campanulate, white or whitish ; segments 

 ovate-lanceolate, many-nerved. Filaments clavate, often papil- 

 lose ; anthers small. Style stout and persistent (or none) ; the 

 emarginate stigmas more or less connate into a stigmatic tube. 

 Fruit baccate, or capsular and septicidal or loculicidal, incom- 

 pletely 6-celled. Rarely acaulescent, usually with a stout woody 

 caudex, often tall and tree-like : leaves linear-lanceolate, spines- 

 cent at apex : flowers usually solitary and nodding. 



SERIES II. Floral bracts none or foliaceous. Perianth deciduous ; segments 

 distinct, net-veined. Stamens hypogynous, or at the very base ; anthers more 

 or less extrorse. Styles united at least at base, deciduous. Fruit loculici- 

 dally dehiscent or berry-like. Seeds turgid, with thin close brown testa. Flowers 

 mostly large and showy, solitary or racemose or pseud-umbellate. Pedicels not 

 jointed. Leaves with anastomosing veinlets. 



Exceptions. Perianth persistent in Lloydia and Trillium ; segments several- 

 nerved in Lloydia, Clintonia, Medeola, and Scoliopus. Anthers usually introrse in 

 Trillium. Style persistent in Lloydia ; stigmas sessile and persistent in Calo- 

 chortus, Scoliopus, and Trillium. Capsule mostly septicidal in Calockortus. Seeds 

 flat and horizontal in most Liliece ; crustaceous in Clintonia. Leaves with trans- 

 verse veinlets in Lloydia (?), Calockortus, Scoliopus, and most TJvulariea.. 



Tribe X. Lilieae. Flowers terminal or axdlary or subumbellate, upon a 

 more or less leafy stem from a bulb or coated corm, campanulate or funnel- 

 form ; segments usually nearly equal and similar, bearing a nectary or gland : 

 capsule many-seeded : seeds horizontal or ascending. 



