il 



% 





428 



BOTANICAL GAZETTE [June 



root semi-woody, with a branched crown: stems 2 to several from the 

 crowns, rather slender, erect, 2- 4 dm high, somewhat cy.mosely 

 branched at summit, glabrous, polished ivory white: leaves all entire; 

 the lower narrowly spatulate-oblanceolate, sometimes abruptly acute, 

 all but the lowest sessile; from the middle up linear, an* ' 



minute 



from the center of the papilla, and closely covered with microscopic 

 pointlike hairs barbed at the summit: calyx-tube short-turbinate, 



stamens numer 



about 5 mm long: petals white, spatulate, 10""" long: 

 ous, a few of the outer filaments dilated-petaloid but all fertile, shorter 

 than the petals: style stout, not cleft at apex: capsule globose, 

 crowned by the divaricate and now somewhat subulate calyx-lobes. 



Las Vegas, Nevada, from washes in the hillsides, May 4, 1905, Goodding 2273. 



Mentzelia synandra, n. sp. — Harsh 

 n not known (roots wanting in type 



stems 



several from the base, somewhat branched, 3-4*™ high, with long 

 whitish aciculae and the short barbed pubescence of this genus: 

 leaves mostly broadly elliptic-ovate, somewhat irregularly dentate, 

 3-6 cm or more long, the petioles usually much shorter; the upper 

 surface bearing long aciculae with pustulate bases, and the lower 

 long barbed hairs, both kinds mingling on the petioles and inflo- 

 rescence: calyx-tube io-i4 mm long, somewhat exceeded by the linear- 

 lanceolate lobes: petals 5, yellow, obovate-spatulate, abruptly acute, 

 3~4 cm long: stamens very numerous, all similar but the inner succes- 

 sively shorter; anthers oblong-oval; the filaments filamentous, not 

 longer than the calyx-lobes, all connate at base, forming a firm 

 thick-walled ring to which the petals cohere by their bases, the whole 

 deciduous together from the firm rim of the calyx- tube: style stout, 

 the 3-5 stigmas more or less convolute: fruit unknown. 



,s Mountains, southern Nevada, May 13, 1905, Goodding 2373. 

 A very remarkable species, simulating the arrangement of petals and stamens 



in the Malvaceae. 



isma 



— A coarse biennial, 3~5 dm high, branching 



stem 



hirsute on the stems, less coarsely so on the leaves and sparsely on 

 the pods: leaves mostly basal (the crown-leaves wanting in the type), 



