180 MR. NUTTALL'S DESCRIPTIONS OF NEW 



GYMNOCAULIS. 



G. FAScicuLATA. Orohauche {Gymnocaulis) fasciculata. Nutt. Gen. Am. ii. 

 p. 59. Since this name was proposed, Endlicher, in his great work on the 

 Genera of Plants, has founded his genus Anoplanthus on the original congener of 

 Gymnocaulis uniflora, which in the Genera I altered to G. hijlora, as being the true 

 state of the iniloresence ; it ought, however, notwithstanding, to prevent greater 

 confusion, to remain G. unijlora. 



ASCLEPIAS. 



A. *MACROPHYLLA. Stem erect and smooth ; leaves verticillate in threes or fours, very long and smooth, 



linear-lanceolate, below and on the branches opposite, on very short petioles ; peduncles shorter than 

 the leaves ; umbels and flow^ers rather small and smooth ; lobes of the corolla oblong-ovate ; process 

 of the nectaries strongly curved, acute ; stype of the nectaries rather short. 



About three feet high. Leaves near a span long, very distant. The first pair 

 opposite, as well as the upper, and those on the branches. Fowers small, greenish- 

 white, with some brown, very much like those oi A. veriicillata, to which it is allied, 

 though remotely. 



Hab. Near Monterey, Upper California. 



STANLEYA. 



S. *FRUTicosA. Smooth ;. leaves lanceolate, entire, or sparingly denticulate, attenuated into a longish 

 petiole ; lamina of the petals longer than the claws ; stipe more than twice the length of the pedicel. 



A shrubby species, with flowers very similar to those of S. pinnatijida. Leaves 

 two to two and a half inches long, less than half an inch wide, the uppermost linear, 

 all thick and apparently succulent. 



Hab. Rocky Mountains of California. 



BARTONIA. 



B. *MULTiFLORA. Biennial ? stem smooth, white and shining, corymbosely branched ; leaves narrow- 



lanceolate, sinuate, pinnatifid, attenuated below and sessile ; flowers subtended by one or two linear 

 bractes ; petals ten, oblong-oval, obtuse ; capsule urceolate, with three to four valves ; segments of 

 the calyx long and subulate ; seeds in a double series, winged. 



About two feet high, dichotomously and numerously branched. Flowers 

 corymbose, terminating the branches, three or four together, but distinct, rather small. 

 Petals about three-fourths of an inch long, apparently straw-white, as in B. ornata, 

 the inner smaller. Calyx with yery long, subulate points. Capsule urceolate, rather 

 large for the plant ; three-fourths of an inch long and two or three lines wide. Style 

 elongated, filiform, placentas succulent, the seeds thickish, and with a winged 



