CATALOGUE. 417 
branched; branches divaricate, somewliat spinescent; leaves Hncar, about 
4" long, sessile, often snbflilcatc, obtuse or the younger mucronate ; pediiiielcs 
mostly solitary, often twice bibracteolate ; flower-bud gil)bous, loiio-; sepals 
purple, moderately unequal, ovate and oblong; posterior petals eiinal hi 
length, with united claws, the lateral lamina dilated, obhque, rhoiiiboid-ovate, 
the middle one much larger, narrowly oblong ; stamens disliiict, luhiafe io llie 
claws; fruit ovoid, acuminate, sometimes siiljcordnle, eaiiesceiillv l)air\ and 
beset with slender barbed prickles. — Southern Cahlbniia lo Soiilliei ii Texas 
and New Mexico ; Southern Nevada, (Fremont.) 
Page 38. Cerastium aryense, L., and Stellatua cuassifolta, I^lirli. 
Labrador, (Eev. S. R. Butler.) 
Page 40. Arenaria FeNDLERI, Gray. The ivpieal l()rni of lliis species 
w^as collected in Southern Utah by Dr. J'alnnT. His very liin; specimens 
are 1° in height, with a decidedly woody Ijase. 
Page 41. Arenaria verna, L. La1)ra<l()r, (l>ull(>r.) 
Page 48. Spideralcea incana, Torr. 7^/^?/?/. Wright. 1. 21. Hoary- 
velvety throughout with a minute closely appressed stellate pubescence; 
stems erect, woody at base; leaves ovate, sub-o-lobcd, obtuse, obsoletely 
crenulate, sometimes subcordatc ; flowers small, axillary, crowd(.'d and race- 
mose-panicled ; cells 2-3-ovuled. Var. oblongifolia, Gray. Tall and 
slender, 2-3° high, loosely branching; leaves lance-oblong, the lower cauline 
2-3' long, more broadly lanceolate and often hastatcly 3-lobed, the nppei- 
usually only crenate-toothed, sometimes all more or less lobed ; carj^ds 
beaked. — The specimens rescm1)le the original 1329 Wright, (thus doubtfully 
referred by Dr. Gray and noted as "inclined to run into S. nngiistifoUa, 
Spach.,") and others collected by Newberry in Ives' expediticm ; and s.sf; 
Wright, considered a variety of >Si, angustifoUa are but slightly diU'erent, and 
S. Feiidleri^ Gray, is but another form. New jMexico and Arizona; Sonthern 
Utah, (Palmer.) 
Page 49 — before GERiiNiACE^E, 
ZYGOPIIYLLACEiE. 
Larrea^ Mexicana, Moric. 3-10° high, the branchlets short ami \ei \ 
numerous ; leaflets a single pair, connate at base, 2-4'' long, (dliptic, oblong, 
^LAKli'KA. C.w . St ]ial.s r>, (li Lidiioiis, iiiil)ii(>at< il. I'ctals.'). nn^iiiciilat.-. im i . aiiii,'- llif calx x. 
tlecitlnous, imbiicalf(l. Disk small, ](i-lol>c<l, Stanirns IC in.Mjdri at (lie l>a.-c ol' (li.- disk; rilaiii<nf>^ 
(itfached below- npoii ihv oiitiT sidi' (d a >.-aI<- : aii(!i< !H -il-loji-. 0\aj-y -lini}->(ijii!al.-, j, ;!..-.■. 
53 
