354 DIPSACE^. 



spur much longer than the body : f r. of rouudish outline but with a stout 

 and prominent apiculation, the otherwise glabrous back provided with a 

 broad ribbon-like keel, this densely ciliate on both margins, the subros- 

 triform apiculation bearing similar hairs, the turgid, abruptly infiexed 

 wings leaving on the ventral face an elliptic acute opening. — Plentiful on 

 the northward slopes of low hills west of Napa Valley ; growing with 

 the preceding, and quite as distinct from it in form and coloring of 

 corolla as in the striking characters of the fruit. April. 



4. V. coiigesta, Lmdl. Bot. Reg. t. 1094 (1827). Corolla rose-purple, 

 3 — 4 lines long, with obviously bilabiate 5-cleft limb, the lobes oblong, 

 obtuse; txibe very gibbous, spurred at base, the spur short, arcuate, 

 obtuse: fr. pubescent, the keel prominent, obtuse, the circumscribing 

 ventral-face wing broad, involute. — An Oregonian species, attributed 

 also to California by some, but not positively known to us as Californian. 



5. V. magna, Greene, Proc. Philad. Acad., 1895, p. 548. Glabrous, 

 the stout stems sharply angular, 3 — 5 ft. long, tortuous, half-reclining 

 among shrubs, or on fences, and with rather numerous small branches: 

 corolla white, bilabiate, with ample fuuuelform tube, and a short thick 

 spur produced beyond the base: fr. glabrous externally, triquetrous- 

 ovoid, the ventral concavity formed by the quite simple wings almost 

 closed below, open above, the wings strongly hispid-ciliate within. — 

 Collected only by the author, in Knight's Valley, Sonoma Co., June, 

 1894. Species remarkable for its great size, and half-climbing habit ; 

 the fruit showing afltinity with T'. aplianoptera. 



6. V. samolifolia, Gray, 1. c; DC. Prodr. iv. 642 (1830), under 

 Betckea. Corolla a line long, obscurely bilabiate, with short obconic- 

 saccate spur: fr. triquetrous, wholly destitute of wing, glabrous or a 

 little pubescent. — Neau the coast, from Sonoma Co. northward. 



Order LXIII. D I P S A C E /€ . 



Coulter, Mem. in Act. Genev. ii. 13 (1823). Juss. Gen. 194 (1789) in 

 part. 



Herbs with opposite leaves, and flowers in dense involucrate peduucled 

 heads ; each flower in the head enclosed within a tiibuiar involucel and 

 subtended by a bract. Calyx-tube adherent to the ovary ; limb entire, 

 or toothed, or with bristle-like segments that persist upon the fruit. 

 Corolla inserted at summit of calyx-tube, 4- or 5-lobed. Stamens 4, 

 epipetalous, alternate with the corolla lobes. Style filiform ; stigma 



