62 SCROPHULARIACE.E. 



COLLINSIA. 



C. concolor, Greene. Near C. bicolor and probably only a variety distinguished 

 by fewer red-purple flowers half as large, hairy calyx and more slender, revolute leaves. 

 San Diego Co. 



C. Franciscana, Bioletti. Is a form described as intermediate between C. bicolor 

 and C. sparsiflora: slender with thinnish foliage: leaves ovate or narrowed: pedicels 

 1-8 in the axils of upper leaves, from shorter, to 2 or 3 times as long as the calyx: 

 corolla 9 lines long, bluish dotted with purple, throat closed at the mouth. San Fran- 

 cisco Bay region. 



C. arvensis, Greene. Erect, simple or with several nearly erect branches from the 

 base, 10-18 inches high, glabrous except the very sparsely bristly-hairy leaf-margins: 

 lowest leaves oval or oblong on petioles equaling the blade, 6 lines long, coarsely toothed 

 or nearly lobed; stem leaves lanceolate to linear, sessile, revolute: flowers loosely 

 racemose, deep violet, 9 lines long: calyx-teeth lanceolate-subulate, twice the length of 

 the tube: corolla with compressed throat 3 lines long and broad, upper lip half the 

 length of the lower and paler: filaments slightly hairy below. This lias usually been 

 referred to C. sparsiflora, which species Greene restricts to a small flowered form. 



C. Wrightii, Watson. Divaricately branched, 3 or 4 inches high, glandular-hairy, 

 viscid: leaves linear-oblong to lanceolate, entire: flowers pedicellate, 1 or 2 in the axils, 

 the uppermost in a naked umbel: calyx 2 lines long: corolla but a little longer, throat 

 and tube shorter than the broad lobes; lower lip blue, upper yellowish: pod 2-seeded. 

 Near C. Torreyi. Alpine in Kern Co. 



TONELLA. 



In Bay-Reg. Bot. this genus is united with Collinsia, and our species is there called 

 . tenella, Benth. 



PENTSTEMON. 



P. leucanthus, Greene. Erect, 4-6 feet high, pallid, glaucous: leaves linear-lanceo- 

 late, entire: sepals ovate. with acuminate tips: corolla white, 12-18 lines long, limb with 

 short spreading lobes: anthers horseshoe-shape, filaments naked. Santa Barbara Co., 

 John Spence. 



P. Sonomensis, Greene. Suffrutescent, evergreen, very leafy, 5-10 Inches high, 

 slightly puberulent: leaves rather light green, coriaceous, denticulate, 6-9 lines long, 

 short-petiolate, the uppermost round-ovate acutish, lower nearly orbicular and retuse: 

 corolla 1 inch long, deep red, segments nearly equal, not widely spreading: anther 

 slightly exserted, white, wooly. Better considered a variety of P. Menziesii, Hook., 

 of which the type belongs on the North Coast. 



