ORDER 141. H^EMODORACE^S. 335 



ORDER CXL. BROMELIACE^E. BROMELIADS. 



Herbs hard, dry, rigid, and often scurfy, with regular double perianths^ 

 nearly or quite free from the ovary. Stamens 6, anthers introrse. Ovary 

 3-celled. Seeds numerous, with mealy albumen. All tropical, and capable 

 Df living in air alone. 



1. TILL AND SIA, L. Sepals 3, membranous, convolute. Pet 3, peta- 

 loid, imbricate, spreading above. Sta. hypogynous. Ovaiy free. Caps, 

 with 3 double cartilaginous valves. Seeds slender, on comous stipes. 2{ 

 Scurfy air plants, with perennial 2-ranked narrow leaves. 



* Stems rigidly erect. Lvs. linear-filiform. Fls. in bracted spikes, blue Nos. 2 4 



*1 T. usneoides L. Long Moss. Stems filiform, pendulous, branched; Ivs. linear- 

 filiform, curled, 1 2' ; fls. solitary, green or gray. Low lands, Va.. and S. Hangs in 

 gray festoons from the branches of every tr >e. Used in upholstery. . 



2 T. Bartramil Ell. Stems slender, If: Ivs. shorter, smooth ; spike branched, 34', 



loose-flowered ; pet. spreading at apex, as long as the bracts. Ga., Fla. 



3 T. cjespitosa Leconte. Stems in dense clusters, 3 6' ; leaves scurfy, much longer, 



erect ; spike 3- or 4-flowered, 1 ii' ; pet. recurved, longer than the bracts. E. Fla. 



4 T. recurvata Willd. Scapes filiform, 2-flowered, 6' ; Ivs. scurfy, recurved. E. Fla. 



2. ANANASSA SATIVA. PINEAPPLE. Raised in hothouses for its 

 well-known fruit, which consists of a consolidated abortive flower-spike. From S. Am. 



ORDER CXLI. H^EMODORACE^E. BLOODWORTS. 



Herbs perennial, with fibrous roots, equitant or rosnlate leaves, and perfect 

 flowers. Perianth regular, 6-parted, scurfy or woolly outside, more or less 

 adherent Stamens 6 or 3, and opposite the petals, anthers introrse. Ovary 

 3-celled, 1-styled. Capsule covered with the withered perianth. Seed* 

 with cartilaginous albumen. 



Ovary wholly adherent. Stamens 3, exserted. Perianth woolly outside LACXANTHES. 1 



Ovary half free. Stamens 6, included.* Corymbed perianths woolly all over LOPHIOLA. 2 



x Racemed perianths rugous-scurfy ALETRIS. 3 



1. LACNANTHES, Ell. RED-ROOT. Fls. woolly outside, oblong. Sep. 

 linear. Sta. 3, and style filiform, exserted. Caps, oo-seeded. U Roots 

 fibrous, red. Lvs. ensiform, equitant Fls. in a dense corymb. July Sept. 

 L. tinctoria Ell. Swampg, R. I. to Fla. Stem strictly erect, 1| 2f ; leaves mostly 



radical, 3 4'' wide by JX, or more ; flowers 4 5", glabrous and yellow inside. 



2. LOPHIOLA, Ker. CREST-FLOWER. Fls. woolly outside and in- 

 side, oval. Sepals oblong. Sta. 6, glabrous, not exserted. Styles sepa- 

 rable, conical with the 1 stigma. Seeds white. U Root creeping. Stem 

 flexuous, corymbous above, densely clothed with soft white wool. Jl., Aug. 



L. a urea Ker. Sandy swamps, N. J. to Fla. Stem 1 2|f; leaves mostly radical 

 shorter than the stem ; flowers yellowish under the white wool, 2". (Conostylis, Ph.) 



3. ALETRIS, L. STAR-GRASS. COLIC-ROOT. Perianths rugous, as if 

 scurfy or mealy, tubular, 6-cleft, arranged in a slender raceme. Styles 



