552 SCROPHULARIACE^E. Mohavea. 



lower 3-lobed and bearing a prominent "but comparatively small palate, "bearded 

 down its middle; all the lobes broad, erose-denticulate and abruptly short-acumi- 

 nate. Fertile stamens 2, with anthers one-celled by confluence : the other pair 

 reduced to rudimentary sterile filaments. Stigma depressed-capitate. Capsule 

 globular, thin-walled, tipped with the persistent style, the nearly equal cells open- 

 ing near the top by a transverse chink. Seeds numerous, oblong, smooth on the 

 back, cupshaped and with thickened corky sides on the inner face. A single 

 species. — Gray in Pacif. B. Bep. iv. 122, Bot. Ives Colorado Exp. 19, & Proc. Am. 

 Acad. vii. 377. 



1. M. viscida, Gray, 1. e. An erect annual, a span to 2 feet high, corym- 

 bosely branched, pubescent and very viscid : leaves lanceolate, entire (2 inches 

 long), tapering into more or less of a petiole ; the lower opposite, the upper alternate : 

 flowers in the axils of the upper leaves and corymbose or at length racemose at 

 the summit, short-pedicelled : corolla sulphur-colored and somewhat purple-dotted 

 (an inch and a half long). — Antirrhinum eonfertifloriim, Benth. in DC. 



Gravelly banks, from Fort Mohave to Fort Yuma on the Colorado, and adjacent parts of 

 Arizona, first found by Coulter and Fremont. 



5. SCROPHTTLARIA, Tourn. Figwokt. 



Calyx deeply 5-cleft, the lobes usually broad and rounded. Corolla short, with a 

 ventricose globular or oblong tube, unequally 5-lobed ; 4 of the lobes erect (the two 

 upper longer), the fifth or lower one recurved or spreading. Stamens 4 in two 

 pairs, inserted low down on the corolla, shorter than the lobes : anthers transverse 

 and by confluence one-celled : a rudiment of the fifth stamen conspicuous in the 

 form of a scale borne on the upper side of the throat of the corolla. Stigma entire 

 or emarginate. Capsule ovate, septicidal, many-seeded. Seeds tuberculate-rugose. 

 — Chiefly perennial herbs, of homely aspect; with opposite leaves, and loose cymes 

 of small flowers in a narrow terminal panicle or thyrsus. 



1. S. Californica, Cham. Nearly smooth perennial, 2 to 5 feet high : pedun- 

 cles and pedicels of the open panicle minutely glandular : leaves oblong-ovate with 

 a truncate or cordate base, or narrowly deltoid, coarsely doubly toothed or incised, 

 sometimes laciniate ; the lower ones occasionally with a pair of detached lobelets 

 near the summit of the petiole : rudiment of the sterile stamen spatulate or nar- 

 rowly cuneiform, either rounded or somewhat pointed at the apex. — Linnaaa, ii. 

 585. . S. nodosa, var., Benth. PL Hartw., &c. 



Moist grounds, from San Diego to San Francisco, &e., and east to Nevada. Variable in the 

 foliage and size of flowers and capsules. Corolla 3 to 5 lines long, dull or lurid purple. 



S. nodosa, Linn., of the Atlantic States and Europe, extends west to Utah and apparently to 

 Oregon. It may therefore occur in the northern part of the State. It is distinguished by 

 the larger and orbicular sterile stamen-rudiment, and the leaves are merely serrate, rarely at all 

 incised. 



6. COLLINSIA, Nutt. 



Calyx deeply 5-cleft, somewhat campanulate. Corolla with tube more or less 

 ventricose and gibbous or saccate on the upper side, more commonly declined, con- 

 spicuously bilabiate; the upper lip 2-cleft, and its lobes more or less recurving; the 

 lower 3-lobed and larger, its lateral lobes pendulous-spreading, the middle one 

 conduplicate into a keel-shaped sac and including the declined stamens and style. 

 Stamens 4 in two pairs, with long filaments ; the lower or anterior pair inserted 



