BOTANY. [101] 45 
short, appendages. Achenia compressed, usually with two approximate nerves at each margin, 
which are barely hirsute, terminated by a small, disk-shaped, rather prominent areola, which 
is entirely naked, there being no trace of a pappus. 
Baccuaris Dovetasn, DC. Prodr. 5, p. 400; Torr. & Gray, Fl. 2, p. 259; excl. syn. P. 
Pingrea, &c. Along streams; Napa Valley, (male,) and poate ke! (female); California, 
March and April. The leaves oftih denticulate. 
BACCHARIS SERGILOIDEs, (sp. nov.): suffruticosa, glabra, confertim ramosissima; ramis ramu- 
lisque angulatis rigidis articulatis seepissime aphyllis; foliis dum adsunt parvis spathulatis 
uninerviis, ramulorum ad bracteas minimas reductis, capitulis parvis in ramulos confertis sub- 
sessilibus, masculis magis glomeratis; involucro obovato, squamis multiseriatis appressis glabris 
oblongis, seu interioribus lanceolatis, foem. acutis, masc. omnibus obtusis ; receptaculo conico 
subpaleaceo ; acheniis glabris; pappo brevi. Dry arroyos, fifty miles west of the Colorado, 
western New Mexico. A very bushy, broom-like plant, with small heads, apparently abundant 
on the Gila, where Colonel Emory and others have gathered specimens. 
Baccuanris Texana, Gray, Pl. Fendl. p.'75. Prairies, &c. Comanche plains, Northwestern 
Texas ; September. 
Baccuaris sarorna, Zorr. & Gray, Fl. 2, p. 258. Sand-banks of the Canadian, near the Shaw- 
nee villages; August. : 
Prucuza Feta, DC. Prodr. 5, p. 452. On the Canadian ; August. 
TrssARIA (PHALACROCLINE) BOREALIS, Gray, Pl. Fendl. p. 15, & Pl. Wright 1, p. 102. Wil- 
liams’s river ; February. 
§ LINE ‘GNAPHALIOIDES, Nutt. in Trans. Amer. Phil. Soc., l. c.; Torr. & Gray, Fl. 2, p. 
267 ; “yar. Bieetovit: foliis spatulato-oblongis vel sublinearibus ; paleis receptaculi frnotiferia 
donee multo magis lanatis. (Tas. XIII.) California; along rivulets near Knight’s ferry, on the 
Scanislaus river; May. Plant a span high, rather stouter, and with larger and broader leaves, 
and larger heads than in our specimens of N uttall’s plant; which, however, are poor, and perhaps 
depauperate. The heads are not larger in Dr. Bigelow’s plant than those of 8. gnaphalioides 
are described to be ; but the paleze are more woolly on the back, which perhaps is more deeply 
saccate, especially in the upper ones. In both, however, the saccate portion enclosing the fruit is 
larger than the hyaline wing in the uppermost fructiferous pale. ._The male flowers are sub- 
tended by one or two small and linear glabrous pales ; their scanty pappus is sometimes barely 
denticulate, sometimes barbellate-toothed. 
Evax (EusPEREVAX) CAULESCENS. Psilocarphus pega Benth. Pl. Hartw. No. 1812, p. 
319. (Tas. XI.) Napa Valley, California; April 25. This plant is no Psilocarphus, but 
essentially an Evax.. The achenia are obcompressed, and the palee barely concave (not com- 
plicate): the latter are of a firm, chartaceous texture, and persistent on the villous cylindrical 
receptacle, or the uppermost (which form an involuerate verticil around the 6-8 sterile flowers) 
herbaceous, all pointless, or nearly so. Achenia smooth. 
PSILOCARPHUS TENELLUS, Nutt. l. c, Near San Francisco and Mark West’s omiek California ; 
April. Quite distinct from P. globiferus, to which Nuttall’s P. brevissimus and P. Oreganus 
are likely to belong. ) 
Micropus Catirornicus, Fisch. & Meyer ; DC. Prodr. 7, p. 283. Napa valley and Corte Ma- 
dera, California ; April. ; 
Ecurrta grecta, Linn. River banks, Shawneetown, Arkansas ; August. 
BLENNOSPERMA CALIFORNICUM, Torr. & Gray, Fl. 2, p. 272. Rancho of San Geronimo, Cali- 
fornia ; April. 
- Porymnta Uveparta, Linn. Woods, on the Lower Canadian ; August 
- Menampoprum cinerzuM, DC. Prodr. 5, p. 518. Prairies, on sue Canndiniss September. 
Bertanpiera Texana, DC. Prodr. 5, p. 517. Bottom lands and acacia on the Canadian 
and Walnut creek ; Bi Si 
” 
x 
