BOTANY. 11 
high, the short leaves with crowded leaflets, and the raceme of showy blue flowers, giving the 
plant somewhat the appearance of a dwarf lupine. Leaflets about half an inch in length. 
Pedicels shorter than the calyx. Flowers almost an inch long, crowded. Ovary silky, many 
ovuled. Fruit not seen. 
SopHora sericea, Nutt.; Torr. & Gray, Fl. 1, p. 390. Banks of Colorado Chiquito, New 
Mexico; May 1. 
aenuosens FABACEA, DO. ; Gray in Mem, Amer. Acad. 6, p. . ~Leroux’s Spring; April 27. 
In bloom. 
OutnerA TeEsoTa, Gray, Pl. Thurb., p. 328; Torr. Bot. Whippl., p. 82. Dry arroyos of the 
Colorado. A spreading tree 20-25 feet high. - 
Horrmansecoia Jamesu, Zorr. & Gray, Fl. 1, p. 393; Gray, Pl. Wright. 1, Lo 54. Rio 
Grande, New Mexico; June 1. 
PARKINSONIA MICROPHYLLA, Torr. in Bot. Whippl., p. 82, and in Mex. Bound. Se p- 
Purple Hill Pass to Big Cafion, Colorado, on rocky hills. Shrub 5 to 10 feet high, with sparse 
foliage, and no flowers nor fruit in January. 
Crrcipium FLoRIDUM, Benth. in Pl. Wright. 1, p. 58. Fort Yuma and Bill Williams’s Fork ; 
common on Lower Colorado; a small handsome tree with very green bark, called palo verde. 
ALGAROBIA GLANQERLORA, Torr. & Gray, Fl. 1. c. &c. Riverside mountain on the Colorado; 
common everywhere below Black Caiion; ‘ Mezquite.’’ 
Acacia GREGG, or CouLTERI, Gray, Pl. Wright. Common on the Colorado; up as far as the 
Mojave valley. 
STROMBOCARPA PuBESCENS, Gray, Pl. Wright., p. 60, Torr. P. R. R., Vol. 5, p. 360, t. 4; with oe 
the last called tornilla or screwbean. 
ROSACE 2. 
Spiraa caspitosa, Nutt.in Torr. & Gray, Fl. 1, p. 418. In mats on rocks; high table-lands; 
Camp 70; April 10. 
CoLEOGYNE RAMosIssIMA, Torr. Pl. Firemont., p. 8, t. 4. Sitgreaves’s Pass; March 24. A stiff- 
branched, almost spiny shrub, 3 feet high, with little foliage and few flowers; flowers yellow. 
The scanty specimens of this remarkable plant furnish nothing to add to the excellent published 
description and figure. 
EMPLECTROCLADUS FascicuLatus, Torr. l. c., p. 10, t. 5. Long Valley; Camp 62; March 26. 
Good specimens, confirming the character and figure; the fruit still unknown. 
POTENTILLA RIVALIS, Nutt. in Torr. & Gray, Fl. 1, p. 437. Jesup Rapids; February 20, 
Cowanta Mexicana, Don; Gray, Pl. Wright. 2, p. 55. Common from Yampuai creek to the 
Rio Grande, New Mexico; in flower April 5; flower and fruit May 25. 
PursHia TripENTATA DC.; Hook. Fl. Bor.-Am. 1, p. 170, t. 58. Moqui villages; May 15. 
GruM (SIEVERSIA) TRIFLORUM, Pursh.; Torr. & Gray, Fl. 1, p. 423. Base of Bill Williams’s 
mountain; April 28. ‘‘A very pretty plant when growing; flowers pendulous, rose color,’’ 
AMELANCHIER CANADENSIS, var. ALNIFOLIA, Torr. & Gray, Fl. 1, p. 473. Peach Orchard 
Spring, New Mexico; May 18. 
ONAGARACE®. 
C(ENOTHERA BIENNIS, Linn. San Diego, California, to Laguna, New Mexico, 
CENorHera ALBICAULIS Nutt. ; Gray, Pl. Wright. 1, p. 69. Sandy banks of the Colorado gen- 
erally; May 1-20. The smooth, entire-leaved form. R. pallida, Dougl. 
(@inorneRa (PAcHYLopuis) Eximta, Gray, Pl. Fendl., p.45. Yampai valley; and from Yampai 
valley to Santa Fé; flowers 3 in. in diameter, pure white; no fruit. 
(ENOTHERA PRIMIVERIS, Gray, Pl. Wright. 2, p. 58. Yanijel valley to Little Colorado; Bian 
Various forms with entire and pinnately-parted leaves. 
