POLEMONIACE^. (GILIA FAIIILY. ) 75 



1. ERYTHRiEA, Pers. 



Stamens inserted on the throat of the corolla; filaments slender; anthers oblong or 

 linear, twisting spirally after shedding the pollen. Style filiform; stigma wedge-shaped 

 or fan-like. Capsule oblong, tapering upward. — Corolla occasionally only 4-parted. 



1. E. trichautha, Grise. A span or less high, branched; lobes of the rose-red corolla 

 lanceolate, fully half the length of the tube at the time of expansion, 3 or 4 lines long; 

 calyx-lobes filifonn, 3-angled. 



2. E. Muhlenbergii, Grise. Two inches to a span high, simple or branched; leaves 

 oblong, half an inch long; lobes of the corolla oval, very obtuse, becoming oblong, 



rose-red. 



2. MICROCAIjA, Link. 



Anthers round-cordate. Stigma peltate-dilated, at length separating or separable into 

 2 plates. 



1. M. quadrangularis, Grise. An inch or two high, fihform, simple and 1-flowered, 

 or branched at the base, witli 1 to 3 pairs of minute oval or oblong leaves; peduncles 

 naked, square; calyx short, square; corolla saflron-yellow. 



3. GENTIANA, L. Gentian. 



Calyx 4^5-toothed or cleft. Corolla 4-5-lobed, often with plaited and toothed folds in 

 the sinuses. Stamens included; anthers sometimes cohering. Style none or very short; 

 stigmas 2, thin and flat. 



1. G. afEnis, Grise., var. ovata, Gr. A span to a footer two high; leaves ovate 

 or oblong; flowers mostly 5 or more, in a leafy thyrsus; corolla blue, an inch or more in 

 length; appendages mostly 2-cleft or 2-i- cuspidate, shorter than the round-ovate lobes. 



4. MENYANTHES, Tourn. Buckbean. 



The campanulate corolla densely white-bearded on the upper surface, the lobes wdth 

 the margins turned inward in the bud. 



1. M. trifoliata, L. The alternate leaves long petioled, 3-foliolate; scape termi- 

 nated by a short raceme of white or pinkish flowers; anthers dark-brown, sagittate. — In 

 shallow water or on wet ground. 



Ordeb 38. POLEMONIACEiE. 



Chiefly herbs with simple or divided leaves, and no stipules; all the parts of the regu- 

 lar flow^er five, except the pistil, which has a 3-celled ovary and-'a 3-lobed style. Calyx 

 imbricated in the bud, persistent. Corolla convolute in the bud. Stamens on the corolla 

 alternate with its lobes distinct; anthers introse. — In Gilia the cells of the ovary and the 

 stigmas are occasionally reduced to two. 



