FIGWORT FAMILY 801 



apex; lower lip 10-12 mm. long; lobes rounded. In swamps: Ont. — Conn. — Va. 

 — Xeb.— Sask. Plain. Jl-0. 



19. P. centranthera A. Gray. Stem short, glabrous, with the spike 1.5 

 ■dm. or less; leaves 5-15 cm. long, glabrous; divisions oval or ovate, doubly den- 

 tate, about 1 cm. long, with callous mucronate teeth; bracts linear or nearly so, 

 cihate and often toothed towards the apex; cah^x about 2 cm. long, its lobes 

 linear to Unear-lanceolate; corolla 3-3.5 cm. long, purple or yeUo'wish; galea 

 shghtly curved, about 1 cm. long; hp about 8 mm. long with short rounded cren- 

 ate lobes. Mountains: X.M. — Colo. — Utah — Calif. Suhmont. Ap-Je. 



20. P. crenulata Benth. Stem more or less villous-puberulent, 2—4 dm. 

 high; leaves hnear, obtuse, 3-7 cm. long, doubh' crenate; spike 3-10 cm. long; 

 bracts similar to the leaves; cah-x cleft in front, 2-3-lobed; lobes ovate-lanceolate; 

 corolla 2-2.5 cm. long, purplish or white; galea about 1 cm. long, curved, not 

 beaked, but with two small triangular teeth; hp 7-8 mm. long, rather deeply 

 3-lobed; lobes rounded. Mountains: Wj'o. — Colo. — Xev. Submont. — Motit. 

 Je-Au. 



26. RHINANTHUS L. Rattle-box, Yellow Rattle. 



Annual, erect, caulescent herbs, blackening in drying. Leaves opposite, 

 toothed or lobed. Flowers perfect, in terminal, leafy, one-sided spikes or soU- 

 tarj' in the upper leaf-axils. Cah-x compressed, 4-toothed, much inflated in 

 age and reticulate. CoroUa irregular, 2-lipped; upper lip compressed, arched, 

 minutely 2-toothed below the apex; lower lip shorter, with 3 spreading lobes. 

 Stamens 4, didj-namous, ascending under the upper lip; anthers pilose; sacs 

 transverse. Capsule orbicular, flat, loculicidal. Seeds several, orbicular, -n-inged. 



Corolla-tube exserted; teeth of the upper coroUa-hp triangular, 1 mm . long. 



1. R. Kyrollae. 

 Corolla-tube included; teeth of the upper lip rounded. 2. R. riffidus. 



1. R. Kyrollae Chab. Stem 3-7 dm. high, usually without black lines, 

 glabrous, or jJlose at the nodes and in decurrent lines, often branched at flowering 

 time, yellowish: leaves elongate, lanceolate, oblong, or linear, dentate, with 

 acute teeth, scabrous; calyx short-hairj-, cihate on the margins; corolla 8-9 mm. 

 long; tube j-ellow. R. Crista-Galli Rydb.(Fl. Colo.) Thickets and meadows: 

 X'.S. — Md. — Colo. — Wash. — Alta. Submont. Jl-Au. 



2. R. rig'idus Chab. Stem 2-6 dm. high, rigid, pilose in decurrent lines, at 

 first simple, later branched, ^\"ith strongh' ascending branches; leaves glabrous or 

 scabrous above and puberulent beneath, lanceolate or linear-lanceolate, dentate 

 and bispidulous-ciliate on the margins: calyx glabrous or puberulent; coroUa 7-8 

 mm. long. ^Meadows: Alta. — Colo. — Wash. — Alaska. Submo7d. — Mont. Je-Au. 



27. MELAMPYRUM (Tourn.) L. Cow-Wheat. 



.Annual herbs, often blackening in drj'ing. Leaves opposite, entire or few- 

 toothed. Flowers perfect, sohtar}' in the upper leaf-a.\ils, or in leafy-bracted 

 spikes. Calyx -l-toothed, the upper 2 teeth somewhat longer. Corolla irregu- 

 lar, 2-lipped; tube gradually enlarged upwards; upper hp compressed, obtuse or 

 retuse: lower hp 3-lobed, 2-grooved beneath. Stamens 4, didj-namous, ascend- 

 ing under the upper lip. Anther-sacs parallel. Capsule flat, obUque, loculicidal. 

 Seeds 2-4, smooth, strophiolate. 



1. M. lineare Lam. Stem 1-5 dm. high, 4-angled, with puberulent lines; 



leaves lanceolate or linear-lanceolate, acuminate, short-petioled, 2-7 cm. long, 



entire; bracts broader, often ovate-hastate, or with sahent bristle-pointed 



teeth; calyx-teeth subulate; coroUa 8-12 mm. long, white or whitish, turning 



■purplish. Dry woods: X'.S. — X.C.^Ida. — B.C. Slont. My-Au. 



Family 118. LENTIBULARIACEAE. Bladderwort Family. 



Small scapose or caulescent herbs, growing in water or wet places. Leaves 

 when submerged dissected into linear or filiform segments, often bladder- 

 bearing, or when aerial basal and entire, or rarely wanting. Scapes naked 



