398 



SCROPHULARIACEiK. 



ft. high; leaves linear, very numerous; flowers yellow in a terminal 

 dense raceme; corolla (including the slender spur) 1 in. long or more. 



Berkeley, Davy; Point Reyes, Miss Alice Eastwood; Valley Ford, 

 Mrs. K. Brandegee. 



4. COLLINSIA Nutt. 

 Annuals with simple opposite leaves. Flowers whorled, forming 

 a raceme, or axillary and scattered. Calyx campanulate, 5-cleft. 

 Corolla declined (the proper tube very short and the abruptly 

 expanded or gibbous throat forming an angle with it), deeply bilabi- 

 ate; upper lip 2-cleft, with erect lobes; lower lip larger, 3-lobed, the 

 middle lobe conduplicate or keel-shaped and enclosing the 4 declined 

 stamens and style. Filaments long and filiform, the lower pair 

 inserted higher on the corolla than the others; the gland at base of 

 corolla represents the fifth stamen. Capsule septicidal, the valves 

 soon 2-cleft. (Named for Zaccheus Collins, American botanist, of 

 Philadelphia. 1764-1831. Species variable. The corolla is a striking 

 imitation of the papilionaceous type.) 



Upper pair of filaments bearded, the lower glabrous. 

 Flowers long-pediceled (some or all the pedicels much longer than the 



flowers), solitary, or the upper in whorls of two or three 



1. C. sparsijlora. 



Flowers short-pediceled or almost sessile, crowded in whorl-like clusters, 

 the lowest subtended by leaves, the others by bracts. 

 Herbage staining brown; upper lip of corolla commonly destitute of 

 crests or transverse ridge; flowers yellowish or whitish, usually with 



purple markings 2. C. tinctoria. 



Herbage not staining; upper lip of corolla with a low transverse ridge 

 at its junction with the throat. 

 Corolla rose-purple or violet, the upper lip paler or whitish; calyx- 

 lobes commonly lanceolate, acute 3. C. bicolor. 



Corolla white or nearly white, the lower lip lilac or purple tinged; 



calyx-lobes oblong, obtuse 4. C. bartsiaefoiia. 



Filaments all glabrous; upper lip of corolla with a jagged wing-like crest at 

 base of lobes or with a pair of prominent callous teeth on each side; 

 flowers in whorls of 2 to 4, the pedicels sometimes as long as the calyx . 

 • 5. C. Greenei. 



1. C. sparsiflora F. & M. Slender, branched from near the 

 base, commonly about 6 in. high; herbage reddish; lowest leaves 

 elliptical, 3 lines long, with 1 or 2 teeth on each side, on petioles 

 nearly as long, the upper oblong to linear, twice as long or more and 

 becoming gradually sessile; corolla 4 to 6 lines long; upper lip bluish 

 or sometimes yellowish at base, purple-dotted at throat, hardly shorter 

 than the lower lip; lateral lobes of lower lip purple; upper lip with 

 an evident transverse ridge or crest; keel sometimes yellowish exter- 

 nally, more or less pilose-pubescent; upper pair of filaments pubes- 

 cent on the upper side; gland conical or somewhat elongated; seeds 

 concave on one side and convex on the other, acutely margined, about 

 2 in each cell. 



Common in low fields or in wet places on hillsides. Apr.-May. 



Var. arvensis iC. arvensis Greene). Commonly with several 

 nearly erect branches from the base, 1 to 1£ ft. high; lowest leaves 

 often shallowly sinuate; calyx-teeth lanceolate-subulate, twice the 



