286 PROCEEDINGS OP THE AMERICAN ACADExMY. 



Key "West, Blodgett ; also Curtiss, no. 1137. Drummond's no. 116, and 

 Havard's nos. 231, 232, from Texas, are somewhat intermediate between 

 the species and variety. 



Var. scabra, Wats. Flowers short-pedicellate : calyx somewhat 

 liirsute-scabrous : corolla-lobes near the apex externally covered with 

 hirsute hairs (especially in bud) : capsule rather larger than in the species. 



— Proc. Am. Acad, xviii. 97. — Caracol Mountains, Coahuila, Palmer, 

 no. 410; Monterey, Nueva Leon, Palmer, no. 2116. 



Var. rigidiuscula, Gray. From 1 to 3 cm. high: leaves linear 

 to linear-oblong, 1 to 2 cm. long, 1 to 5 mm. broad, rather rigid: pedi- 

 cels somewhat shorter than in the species proper : calyx-divisions usually 

 exceeding the free portion of the capsule. — Syn. Fl. N. A. i. pt. 2, 27, 

 in part. — Cameras Pass, Coahuila, Pringle, no. 2855; Gregg, no. 66; 

 Valley of San Luis Potosi, Schaffner, no. 614; Texas, Guadalupe Moun- 

 tains, Havard, no. 233 ; Rio Brasses, Drummond, no. 73 (Florida, Rugel, 

 no. 322, from Dr. Gray). 



H. mpicola. Low, profusely branching from a woody perennial 

 base : stems erect, 8 to 14 cm. high, 4:-angled, glabrous : leaves linear, 

 5 to 15 mm. long, acute or submucronate, rather rigid : stipules triangular, 

 acute or short acuminate, usually unequally setiferous-denticulate : flowers 

 dimorphous, sessile or short-pedicelled, disposed in small cymules terminat- 

 ing the stems and branches : calyx-divisions small, acute, scarcely 1 mm. 

 long : corolla narrowly funnelform, about 5 mm. long ; lobes pubescent 

 above : capsule globose, H mm. or less in length, about one half inferior ; 

 seeds oblong, peltate, slightly concave on the hilar surface, scrobiculate. 



— H. fasciculata, Gray, Syn. Fl. N. A. i. pt. 2, 27, as to plant Wright. 

 Hedyotis (Amphiotis) stenophylla, \ a.r. jmi-vijlora, Gray, PI. Wright, i. 81. 



— Crevices of rocks on the San Pedro River, Arizona, Wright, no. 238. 

 •*-v -w Low, branching from the base : stems spreading or prostrate : divisions of 



tbe calyx obtuse. 



H. salina, Heller. Low, spreading or prostrate: stems 8 to 10 cm. 

 long, branching from a woody perennial base, glabrous : leaves oblong- 

 linear, 5 to 15 mm. long, 2 to 5 mm. broad, essentially glabrous, mar- 

 gin volute : inflorescence in close subcapitate cymules terminating the 

 stems and branches : flowers dimorphous : calyx-lobes short, scarcely 

 1 mm. long, obtusish, glabrous or hirtellous : corolla funnelform, 5 mm. 

 long, pubescent in the throat ; lobes pubescent above : capsule short- 

 oblong, a little narrowed below, about three fourths inferior, the free 

 portion about equalling the calyx-lobes ; seeds as in the preceding spe- 

 cies. — Contrib. Herb. Frank. & Marsh. ColL no. 1, 96. Houstonia 



