84 BOERAGINACEiE. (bOKKAGE FAMILY.; 



1. H5LIOTROPIUM, Tourn. 



Corolla with plaited sinuses. Filaments short or none; anthers connivent and some, 

 times cohering. Style entire or none; stigma a fleshy ring or the edge of a peltate or 

 umbrella-shaped disk. Fruit dry, splitting into 4 nutlets. 



1. H. Curassavicum, L. A smooth and somewhat glaucous succulent herb with 

 spreading or prostrate stems; leaves oblanceolate, an inch or two long; flowers crowded, 

 white or blue; stigma sessile, flat-topped. Blackens in drying. 



2. AMSINCKIA, Lehm. 



Corolla salver-form, or somewhat funnel-form, more or less plaited in the bud at the 

 sinuses, with the tube exceeding the calyx, lobes rounded. Filaments short. Style fili- 

 form; stigma capitate-2-lobed. Nutlets ovate- triangular. Hispid annuals with oblong- 

 ovate to linear leaves, and yellow flowers in at length loose scorpioid spikes or racemes, 

 without bracts, except sometimes the lowest. 



* Nutlets rourjh, the hack convex. 



1. A. spectabilis, Fisch. & Mey. Erect, a span to a foot high; leaves mostly linear; 

 tube of the bright orange-yellow corolla, two or three times the length of the linear, 

 rusty-hispid calyx, nearly half an inch long; the throat enlarged, and the expanded limb 

 a third to half an inch in diameter. 



2. A. intermedia, Fisch. & Mey. Erect, usually a foot or two high; leaves linear 

 or only the lower lanceolate; corolla bright yellow, 3 or 4 lines long; its tube a little 

 surpassing the calyx-lobes; the limb 2 or 3 lines in diameter. 



3. A. lycopsoides, Lehm. Loosely branched, soon spreading, sometimes decum- 

 bent, sparsely hispid with bristles, which on the leaves have conspicuoiis pustulate bases; 

 leaves from lanceolate to ovate, the margins usually undulate; upper flowers mostly 

 bractless; corolla light yellow, about 4 lines long; the throat little enlarged; the limb 2 

 or 3 lines in diameter. Passes into 



Var. bracteosa, Gr., a smaller-flowered decumbent form, -^ith most of the flowers 

 bracteate. 



* * Nutlets nearly flat on the hack, coarsely granulate. 



4. A. tessellata, Gr. About a foot high, rather stout, coarsely hispid, the bris- 

 tles of the calyx rusty; corolla orange-yellow, 3 or 4 lines long, the throat plaited, the 

 tube rather longer than the obtuse calyx-lobes; nutlets broadly ovate, thickly covered 

 with warty granulations closely fitting like the blocks of a pavement. 



* * * Nutlets at maturity, whitish, smooth and polished. 



5. A. vemicosa, Hook & Arn. Sparsely bristly; leaves linear to ovate-lanceolate; 

 corolla light yellow, 4 or 5 lines long, and the limb narrow; nutlets shaped like a grain 

 of buckwheat. 



