Eucnide. LOASACE^E. 237 



7. M. laevicaulis, Torr. & Gray. Stout, 2 or 3 foot high, hranching : leaves 

 lanceolate, 2 to 8 inches long: flowers sessile on short branches, very large, light 

 yellow, opening in sunshine: calyx-tube naked, the lobes 1 to \\ inches long: 

 petals acute at each end, 2 to 2-J inches long, the filaments and slender style a little 

 shorter: capsule 1^ inches long, 3 to 4 lines in diameter: seeds very minutely 

 tuberculate, H lines in diameter. — Fl. i. 535; AVatson, Eot. King Exp. 114. 

 Bartonia laevicaulis, Dough; Hook. Fl. i. 221, t. 69. 



From Santa Barbara (Torrcy) to the Columbia River, anil more frequent east of the Sierra 

 Nevada, in the valleys and on dry foot-hills, to Salt Lake and Western Wyoming. Other spe- 

 cies of this section are common in Colorado and New Mexico. 



8. M. tricuspis, Gray. Apparently annual, G inches high or more, rather stout : 

 leaves oblong-lanceolate, 2 or 3 inches long, acute or acuminate, coarsely sinuate- 

 toothed, attenuate at base to a petiole, the upper ovate and sessile : flowers sessile 

 on the short branches : calyx-limb half an inch long : petals broadly spatulate, 

 light yellow, 12 to 15 lines long : filaments very numerous, shorter than the calyx, 

 linear, somewhat dilated above and marked by a transverse orange band, and pro- 

 longed into two lateral linear cusps nearly equalling the oblong-linear anther: style 

 stout and rigid, 3-cleft, equalling the stamens : capsule half an inch long. — Am. 

 Naturalist, ix. 271. 



Only two specimens have been collected, one at Fort Mohave (Cooper), the other in S. Utah, 

 Parry. The mature fruit and seed are unknown, and the species is probably to be excluded from 

 this section. 



§ 4. Seeds feio, oblong, pointed at base, obscurely angled, smooth ami shining, some- 

 what rugose: calyx-limb 5-cle/t to below t/ie middle: petals 5 : filament* all 

 filiform : capsule urceolate : leaves sessile, coarsely pinnatifid, tvith revolute 

 margins : a cespitose perennial, very densely and tenaciously hispid. 



9. M. Torreyi, Gray. Stems several from a perennial root, much branched 

 and densely tufted, 3 to 6 inches high: leaves oblong, an inch long, acuminate, 

 attenuate at base, deeply pinnatifid with about 2 (1 to 3) lobes on eaeh side, which 

 arc acuminate by the strong revolution of the margin : flowers solitary, axillary, 

 shorter than the leaves: calyx-limb 3 lines long : petals oblanceolate, 5 lines long, 

 pubescent on the outside : style cleft to the middle, nut twisted : capsule ovate, con- 

 tracted below the broad summit, 2.V hues long: seeds a hue long. — Proc. Am. 

 Acad. x. 72. 



A very peculiar species, collected by Dr. Torrcy in the dry valleys of Humboldt County, 

 Nevada, and also by Lcimnon in similar localities in Washoe County. 



2. EUCNIDE, Zuccarini. 



Calyx-tube oblong ; the limb 5-lobed, persistent. Petals 5, united at base and 



inserted on the throat of the calyx. .Stamens numerous; filaments all filiform, 



adnate to the base of the petals and deciduous with them in a ring. Ovary sliort- 



conical at the summit, 1 -celled: style 5-angled, 5-cleft, the lobes often twisted: 



ovules very numerous, covering the 5 prominent expanded placenta}. Capsule 



obovate, very many-seeded, opening by 5 valves at the short-conical summit. Seeds 



minute, longitudinally striate. — Annual or biennial herbs, armed with stinging 



hairs and barbed pubescence; leaves alternate, cordate or ovate, petioled, lobed and 



serrately toothed ; Bowers yellow, pedicelled, in terminal cymes. 



A genus of three S] ios(oi more), confined t" X "it hern Mexico and the adjacent region : made 



:i section of ilentzelta by Bcntham .v llnoker. 



I. E. urens, Parry. Stout, low, very hairy and pubescenl : leaves broadly 

 ovate, 1 oi 2 inches long, cordate or rounded at base, obscurely lobed, coarsely 



