LKNTIHLLAlilACE.IC. (BLADDKKWoIM lAMILV.) 395 



bearded folds iu the throat, and obovate lobes. — Damp woodlands, Newf. to 

 Va. aud Tex., and west to tlie Pacific. April- July. 



2. A. fascicul^tum. Gray. ScaJij stem erect and risiiuf 3-4' out of the 

 ground, mostly longer tliau the crowded peduudee; dirisions of the rnli/x tri- 

 angular, veri/ much shorter than the corolla, which has roun<le(l short lobes. — 

 Sandy ground, L. Michigan to Minn., southward west of tlie Mississippi, and 

 westward. On Artemisia, Eriogonum, etc. May. 



* * Caulescent i Jlowers densc.lij spicate, icith \ -2 brartlets at base of cahjx ; 

 corolla 2-llpped, the upper lip less or not at all 2-cleft. 



3. A. Ludovicianum, (iray. (ilandular-pubescent, branched (3-12' 

 higli) ; corolla somewiiat curved, twice the length of the narrow lanceolate 

 calyx-lobes; the lips equal in length. (I'lieliptea Ludoviciaua, Walp.) — 

 Minn, to 111. and Tex., aud westward. 



4. OROBANCHE, Toum. Broom-rape. 



Flowers spicate, sessile. Calyx cleft before and behind almost or quite to 

 the base, the divisions usually 2-clett. Corolla 2-lipped ; upper lip erect, 2- 

 lobed or emarginate, the lower spreading, broadly 3-lobed. Stamens included. 

 — Old World parasites, on roots of various plants. 



O. .MINOR, L. A span to a foot high, pubescent, pale yellowish-brown, or 

 with purplish-tinged flowers in a rather loose spike ; corolla 6" long. — Para- 

 sitic on clover, N. J. to V^. Sparingly and probably recently introduced. 



Order 77. LENTIBULAKIACE^E. (Bladderwort Family.) 



Small herb!f (growing in icater or icet places'), with a '2-lipped calyx, and a. 

 2-lipped personate corolla, 2 stamens with (confluentl//) one-celled anthers, 

 and a one-celled ovary with a free central placenta, bearing several anatro- 

 pous seeds, icith a thick straight embryo, and no albumen. — Corolla deeply 

 2-lippe(l, the lower lip larger, 3-lobed and with a prominent palate, 

 spurred at the base in front; the palate usually bearded. Ovary free; 

 style very short or none ; stigma 1 - 2-lippe(l. Capsule often bursting 

 irregularly. Scapes 1 - few-flowered. — The following are the two prin- 

 cipal genera. 



1. Utricularia. Calyx-lobes mostly entire. Upper lip of corolla erect. Filaments 



.strongly incurved. Foliage dissected ; bladder-bearing. 



2. Pinguicula. Calyx witli upper lip deeply 3- and lower '2-rleft. Corolla-lobes spreading. 



Filaments straigbter. Terrestrial, with entire rosulate leaves next the ground. 



1. UTRICULARIA, L. Bi.addkrwort. 



Lips of the 2-parted calyx entire, or nearly .so. Corolla personate, the ]»al- 

 ate on the lower lip projecting, often closing the throat; upper lip erect. 

 Anthers convergent. — A(|uatic and immei-sed, with capillary di.ssected leaves 

 bearing little bladders, which float the plant at the time of flowering; or root- 

 ing in the mud, and sometimes with few or no leaves or bladders. Scapes I - 

 few-flowered ; usually flowering all summer. Bladders furnished with a valvu- 

 lar lid and usually with a few bristles at the orifice. (.\ame from utriculus, a 

 little bladder.) 



