CALIFORNIA. 23 
71, CorETHROGYNE virgata, sp.n., caule erecto rigido superne paniculato-ramoso tenuiter 
arachnoideo-lanato, foliis oblongo-lanceolatis amplexicaulibus arachnoideo-lanatis, ramealibus parvis 
bracteseformibus squamisque involucri viridibus glanduloso-viscosis, receptaculo nudo. — San 
Pedro. 
Rami adsunt sesquipedales, apice paniculato-polycephali. | Folia subadpressa, caulina vix pollicaria, 
integerrima vel obscure dentata, rarius infra medium contracta, basi caulem amplectentia vel interdum brevissime 
decurrentia, superiora et suprema in ramulis panicule 1-3 lin. longa, integerrima, Capitula quam in 
preecedente multo minora. Involucri squame numerose, in seriebus circa sex imbricatee, margine scarioste, 
apice virides, acutiuscule, glandulis stipitatis sessilibusque viscose, interiores apice subsquarrose, exteriores 
gradatim breviores in bracteas abeunt. Ligule circa 20, lineares, ovarii rudimento setis paucis brevissimis 
coronato, Corolle disci pappum rufum equantes. Styli rami apice penicillati, Acheenia oblongo-linearia, 
compressa, villosa. 
72. Aster chilensis, Nees.—Torr. et Gr. FJ. N. Amer. 2. p. 112.—San Francisco. 
73. Ertceron glaucum, Ker.—Torr. et Gr. Fl. N. Amer. 2. p. 172.—Bodegas. 
74. Perirye californica, gen. nov. (Plate XV.)—Bay of Magdalena. 
Cuar. Gen. Capitulum hemisphericum, radiatum. Involucrum subbiseriale, squamis aqui- 
longis oblongo-linearibus, exterioribus hirtis, interioribus subscariosis. Receptaculum planum, 
epaleaceum. Corolle extus glandulose, radii uniseriales, tubo tenui, ligula oblonga apice 2-3- 
dentata, disci tubulose, 4-dentate. Styli rami apice dilatati, breviter appendiculati, obtusiusculi, 
hirti. Achenia radii et disci conformia, compressa, hirtella, margine calloso cincta. Pappus 
e squamellis brevibus hyalinis fimbriatis constans, adjecta sepe arista exteriore longa hirtella et non- 
nunquam setis 2-3 brevissimis. 
Species unica: P. californica. Herba annua, erecta, pubescens, divaricato-ramosa, semipedalis vel 
vix altior. Folia opposita, superiora alterna, longe petiolata, lato-ovata vel suborbiculata, grosse dentata vel 
inciso-lobata, basi truncata trinervia, tenuiter membranacea, utrinque sparse puberula, inferiora sesquipollicaria, 
superiora multo minora. Pedunculi elongati, terminales, pauci, laxe subcorymbosi, monocephali. Capitula 
3-4 lin. diametro. Involucri squame exteriores nervose, ciliato-hispide, interiores margine subscariose, — 
disco breviores. Ligule circa 12, breves, ex sicco flavee videntur. Corolla disci luteee, numerosee et semper 
quadrifidee. 
The place of this genus is uncertain, neither the form of the style nor the 
habit being very decidedly that of any of the great tribes of Composite. The 
technical characters bring it nearest to Boltonia, but the habit is totally different, 
resembling that of some Ageratee. It has also some affinity with some of the 
Senecionide, and may possibly be near to the imperfectly known genus Rosilla of 
Lessing. , 
Plate XV. fig. 1. involucre and receptacle ; fig. 2. floret of the ray; fig. 3. floret of the disk ; 
fig. 4, anthers; fig. 5, summit of the style; fig. 6, achenium; fig. 7, pappus. 
75. Ericamerta microphylla, Nutt. in Torr. et Gr. Fl. N. Amer. 2. p. 236. Vaslst foliis pube- 
rulis siccis vel glabris glutinosis, squamis omnibus obtusis vel amnesia acutis, achzenio glabro 
vel juniore adpresse puberulo.—San Francisco, __ 
76. Ertcamerta diffusa, sp. n., glabra, laxe ramosissima, subglutinosa, fois lineari-subulatis 
canaliculatis, floribus disci 4-5, ligula-solitaria, acheeniis villosis. Bay of Magdalena. 
