422 
BOTANY. 
ersi. It was collectecl by JVigelow and others in Northern Arizona and New 
Mexico and mentioned in Bot. Whipple s Ihp. and Bot. Mex. Bound, niuler 
G. elliptica, from which it is clearly disthict. The species seen hy Fremont 
in Sontlicrn Nevada was prohahly the same, so that it is douhttiil it" the true 
G. elliptica occurs in this region. Central Arizona, (Captain C. A. Curtis;) 
near St. George, Southern Utah, (Palmer.) 
Page 136. Plectritis congesta, DC. Southern Utah, (Palmer.) 
Page 1G3. ApLOPArpus spinulosus, DC., Var. caxescens, Gray.^ Bl. 
Fendl. 75. California, New Mexico, and near Saltillo, Mexico. The typical 
A. spinulosus extends east of the mountains to the Saskatchewan. The plant 
is herbaceous, and has small pinnatifid or bipinnatitid rigid leaves, the lobes 
bristle-tipped. The pappus in the present specimens is very unequal, and 
the longer bristles are manifestly flattened toward the base. 
TESSAPtiA^ BOEEALis, T. & G. Blant. WrijrJit. 1. 102. A branchint^ 
willow^ -like shrub, several feet high ; leaves an inch long or less, sessile, nar- 
rowly elliptical, acute at both ends, somewhat silky ; heads not large, in ter- 
minal clusters of 3-8 ; outer involucral scales ovate, tomentose, the inner 
ones scarious and very narrow ; flowers mostly very slender, pistillate only, 
a few (G-8) central ones larger and perfect. — New^ Mexico to California, usu- 
ally on sand-banks along the rivers. This is the "Arrow-wood" of travellers, 
and the Indians are said to use the long straight branches for their arrows. 
There is a figure of it in Sitgreaves' Report. 
Page 166. Feanserta dumosa, Gray. Frcmonfs Report^ 316. A much 
branched shrub, 1-2° high, with small canescent pinnatifid leaves, the minute 
divisions 3-7, entire or lobed ; heads in a loose spike^ the sterile ones wdtli a 
5-7-cleft involucre ; fertile involucre witli straight lanceolate prickles. Cali- 
fornia and Arizona. 
' T!ie followiiii; dctenninatioiis uiid notes upon tbc ComjWHiffc of Dr. Paliuor'.s Soiitlioni Ut'ili col 
lection arc dno to Prof. D anif.i. ('. I'atoN'. In addition to tlu'sc deseiilied spt^cics, Dr. Palmer 'ilso 
I'ollected the tollo\\ in_ij, wbieli are n. w to tli,;t scrtiini of territory, lint are already nientinned in tlie C'lt- 
n\o^\w.~f:rhi(n»i r.< Ui(fhi.-*tnn,),}. Xutr. K. pnmlhtm, Xutt. E. conciiniiim, T. & G-.^Yar, condeiimfnm D C 
Eaton, and ^'ar. iij.ha,„ir!i.. ( ir.iy. ' ■h)i/Kopx!>< vUh»^a, Xutt., Var. hispidn, Gray. La;/ia qlamMosa H. & A 
Gtuiphnlnnn p,ihisfr,, Xutt. Atihunana dimorpha, T. & G. Sciiccio FendJeri, Gray. Tetradymxa unuwsa 
If. i.V A. <-irx>iim vndulatum, f^\n-m^^. SUpluiiwmeria pciitarhcita, J). C. F.'atou. Cirpis occideniaJi.<< Nutt' 
Mu](j(iriii iH piilcli(lhi)u. Xntt. ' 
-■'IKSSAPIA, Pn/ Pavox. Heads many-tlowerod. rayless, tluM,uter tlower.s iu several row.s 
pistillate, vvitli truncate or -'--.-t ootlu-.l slender cor.dlas. 1-.- central tlowers laroer, perfect or st am in ate 
Involucral scales in.l.ricated in scNcral n.^vs. the inner scales longest, .carious and deciduons' Anthers 
tailed ar the l.ase. !e nt the central Ihmers undivi.h d. of rhe outer tlowers 2-cleft exscrted olabrotis 
Achcuia short, s,>,„e^^ liai terete, smooth. Paj.pus of rather few very slender capillary bristles -Mostlv 
South American bhrabs, with scattered entire or toothed leaves. ^ 
