378 VERBENACEAE 



12. P. jonesii Gray. Stems 1 or few from the base, erect but divergently 

 branching, 5 to 12 inches high; herbage spreading-brLstly and also finely pubescent 

 with short mostly deflexed hairs ; bristles mostly arising from a siliceous base or 

 disk; leaf -blades % to 3 (or 5) inches long, the basal linear-oblanceolate or linear, 

 the cauline lanceolate; spikes moderately dense, % to 1^/4 inches long, subtended 

 by mostly conspicuous leafy bracts; calj'x-lobes linear; corolla 14 to 1 line broad; 

 nutlets 2 or 3, contorted-pyramidal, 1% lines long, strongly ridged dorsally and 

 also at the lateral angles, the surface densely crowded or tessellate with unequal 

 several-sided flat tubercles, resembling a cobble-stone pavement; tubercles densely 

 and microscopically papillate ; ventral keel well developed, merged below with the 

 low narrow caruncle. 



Gravelly soil of desert washes and detrital fans, 3000 to 5700 feet : Inyo Co. ; 

 eastern Mohave Desert. East to Arizona. Apr. -May. 



Loes. — Inyo Co.; Black Canon, White Mts., Duran ; Argus Range (n. end), Jepson 19,560a; 

 Hanaupah Canon, Panamint Range, Jepson 7083. Eastern Mohave Desert: Newberry Mts. (Bull. 

 S. Cal. Acad. 24:50). 



Refs. — Plaoiobothrys jonesh Gray, Syn. Fl. ed. 2, 2:430 (1886), type loc. Needles, Jones; 

 Jepson, Man. 856 (1925). Sonnea jonesii Greene, Pitt. 1:23 (1887). 



18. HARPAGONELLA Gray 



Small annual. Flowers minute, white, racemosely disposed along the branches. 

 Calyx -lobes in flower slightly unequal, 3 nearly distinct, the other 2 united % their 

 length, the united portion bearing on the back a cluster of 5 to 9 soft spines; calyx- 

 lobes in fruit very unequal. Corolla subrotate, slightly exceeding the calyx. Nut- 

 lets mostly 2, oblong or ovate, smooth, basally attached, one naked, ascending- 

 hirsutulose and usually infertile, the other fertile, glabrous or nearly so, completely 

 enclosed by the two united lobes of the calyx, the whole calyx becoming in fruit 

 bur-like with its spines diverging, rigid, thick and beset with short bristles hooked 

 at tip. — Species 1. (Diminutive of Latin harpago, a grappling hook.) 



1. H. palmeri Gray. Stem with few to several diffuse branches from or near 

 the base, the branches 3 to 8 inches long ; herbage thinly strigose-hirsute ; leaf -blades 

 narrowly linear or very narrowly lanceolate, I/2 to l^^ inches long; flowers 1 line 

 long, on short pedicels which in fruit become strongly recurved and rigid. 



Dry slopes in the hills and clay depressions on the mesas, mostly at scattered 

 stations, 200 to 1500 feet : coastal Southern California from Santa Catalina Isl. 

 and Riverside Co. to San Diego Co. East to Arizona, south to Lower California. 

 Apr. -May. 



Locs. — Santa Catalina Isl., Grant 4" Wheeler 540; Marietta (5 mi. ne.), sw. Riverside Co., 

 Mum 4' Johnston 5335a; Dehesa School, Sweetvrater Valley, Gander 5072; Otay, near San Diego, 

 Gander 3112; Box Caiion, Mason Valley, e. San Diego Co., ace. F. F. Gander. "In southwestern 

 San Diego Co. Harpagonella palmeri, recorded from 21 different stations, is not rare." — F. F. 

 Gander. 



Refs. — Haepagonella palmeri Gray, Proc. Am. Acad. 11:88 (1876), type loc. Guadalupe 

 Isl., L. Cal., Palmer; Jepson, Man. 857 (1925). 



VERBENACEAE. Verbena Family 



Ours perennial herbs (one species a shrub) with opposite or whorled simple 

 leaves. Flowers complete. Calyx persistent. Corolla in ours with a tube, the 4 

 or 5-lobed limb almost regular or manifestly 2-lipped. Stamens 4, in 2 pairs. 

 Ovary superior, not divided, 2 to 4-celled, becoming a schizocarp and separating 

 at maturity into as many l-celled 1-seeded achene-like nutlets ; style single, entire ; 

 stigmas 2 or 1. Nutlets usually rounded and often reticulate on back, the face with 

 a commissural scar or area of coherence. Endosperm scanty or none. — Genera 73, 

 species about 700, all continents. 



