224 PROCEEDINGS OP THE AMERICAN ACADEMY 



above), upon a naked scape. Perianth free ; segments linear or 

 linear-oblong, obtuse, without glands and nearly nerveless. 

 Stamens long-exserted. Seeds brown, angled. Leaves elongated, 

 dry and grass-like. Bracts very small, ovate, membranous. 

 Bulb-coats becoming black and fibrous. 



* * Flowers perfect : capsule short, the 1-2-seeded cells widely divergent 

 above and dehiscent only at the summit : seeds ovate, with a (fleshy ?) reddish- 

 brown coat. Bulbous. 



44. Amianthium. Glabrous. Flowers white, much shorter than 

 the pedicels, in a dense many-flowered simple raceme on a 

 sparingly leafy stem. Perianth free ; segments ovate-oblong, 

 obtuse, glandless. Leaves linear, obtuse. 



Tribe XIV. Helonieee. Inflorescence a simple raceme, without bracts, 

 on a leafy stem from a thick tuberous rootstock ; glabrous. Flowers perfect 

 or dioecious, glandless. Styles linear, stigmatic down the inside, deciduous. 

 Capsule membranous, obovate to oblong, ventrally dehiscent at the summit of 

 the abruptly divergent cells. Seeds numerous, linear, ascending from near the 

 base, appendaged or winged at each end. Leaves oblanceolate, thin ; veinlets 

 anastomosing. 



45. Helonias. Flowers perfect, in a short dense raceme, purple or 

 greenish ; segments spatulate-oblong, several-nerved, shorter than 

 the slender filaments. Capsule broadly obovate, deeply 3-lobed, 

 the summit much depressed. Seeds narrowly linear with a short 

 white appendage at each end. Stem scaly-bracteate. 



46. CuAMiELiRiUM. Flowers dioecious, in slender elongated racemes, 

 white : segments narrowly linear-spatulate, 1-nerved, equalling 

 the stamens, which are shorter and abortive in the pistillate flowers. 

 Capsule oblong, slightly depressed and shortly lobed at the sum- 

 mit. Seeds flattened, margined, and winged at each end. Stem 

 very leafy. 



Tribe XV. Tofieldieae. Flowers perfect, on bracteolate pedicels, in a 

 simple raceme on an equitant-leafy stem from a creeping rootstock. Perianth- 

 segments narrow, without glands. Stamens 9 to 12 in Pleea ; anthers introrse, 

 short, ovate to linear. Styles distinct and persistent, or none ; stigmas ter- 

 minal. Capsule dehiscing to the base, loculicidal in Narthecium. Seeds nu- 

 merous, small, mostly appendaged or caudate, brown. Leaves distichously 

 equitant, much shorter than the stems. 



47. Tofieldia. Flowers white or greenish, subtended by very small 

 bracts and involucrate with 3 scarious verticillate and more or 

 less united bractlets ; perianth-segments oblong or obovate, 3- 

 nerved, equalling the stamens. Anthers round-cordate, nearly 

 basifixed ; filaments narrowly subulate, naked. Styles short. 



