76 BOTANY. 



Calyx cleft to the middle, segments broadly ovate, acute. Corolla an inch 

 in diameter ; purple (in dried specimens). Carpels pilose, dehiscing on the 

 back from the summit to the base."— (T. & G.) Utah. 



Sph2ERALCEA Fendleri, Cray.— San Francisco Mountains, Arizona and 

 Utah. Taller, more branching, with larger leaves, and beaked carpels. 

 New Mexico. — Forming a transition in some of its forms into the next. 

 S. incana var. disseda, Gray, now comes here. 



Spileralcea angustifolia, Spach, "var. foliis lanceolatis, inferioribus 

 nunc hastato-sub-trilobatis," Gray.— Sanoita Valley, Arizona. (634.) The 

 plant is erect, somewhat branching at the top ; flowers arranged in con- 

 tracted racemose panicles on the ends of the branches; leaves with the 

 characteristic, eroded margins. A showy plant. My specimens were found 

 growing in dry lava soil. (Those of Wright came from alluvial soil.) 



SPHiERALCEA Emoryi, Torr. (PI. Wright. 1, p. 21).— Nevada and 

 New Mexico. In Benth. and Hook. Genera Plantarum, we find Malvas- 

 trum and Sphceralcea in different sub tribes and separated by eleven inter- 

 polated genera, yet considering the habit of Sphceralcea incana, var. disseda, 

 and the resemblance between S. Emoryi and Malvastrum Munroanwn, 

 coupled with the broader generalization of Bentham. and Hooker under 

 head of Sphceralcea, as to the resemblance in habit, it may well be doubted 

 as to whether the genera should not (in part at least) be thrown together. 

 Colorado, New Mexico. 



Hibiscus denudatus, Benth. (Bot. Voy. Sulph. p. 7, tab. 3). (/?. involu- 

 cellatus, Gray, PI. Wright. 1, p. 22.) — One or two feet high, with a few 

 long, thin branches ; leaves distant, 1-2' long, £-§' wide, obtuse, irregularly 

 crenate serrate, petioles 3-6" long; petals light purple, 8-10" long; bracts 

 of the involucel setaceous, 9" long ; entire plant, except the flower, densely 

 covered with a stellate pubescence. (562.) Cienega, Ariz, (near Tucson). 



Thurberia* thespesioides, Gray (PI. Nov. Thurb. p. 308). — Perennial, 



* TnuKBEltiA, Gray (PI. Nov. Thurb. 308).— Bracteoles 3, cordate. Calyx truncate. Stamineal 

 column produced above [alnioit to the apexj into many filaments. Ovary 3-celled with a few ovule3 

 [6-8] in each cell ; Btyle club-shaped at the apex. [Stigmatose on the three projecting angles.] Capsule 

 loculicidal, 3-valved. Seeds obovoid, angular, minutely woolly, without albumen ; embryo oondnplicate, 

 cotyledons foliaceous, covered with black spots, much folded, almost including the inferior radical. — Tall, 

 smooth herbs. Leaves entire or 3-parted. Flowers white or rose colored, solitary on axillary or terminal 

 peduncles. — Gray in Bentham & Hooker, Gen. PI. 1, p. 209. For u, much more full description, see 

 Gray, PI. Thurb. ?. o. , and for a good figure of this, the only species of the genus, see Bot. Mex. Bound, pi. 6. 



