BOTANY. 91 
BURRIELIA GRACILIS, DO. Prodr. 5, p. 664. California, near Monterey, etc.; Мау; so abundant 
as to give a yellow appearance to the hills; Parry. Mostly rather large forms. In one specimen 
a slight disposition to have lobes to the leaves appears. 
BURRIELIA CHRYSOSTOMA, Torr. Ё Gray. Fl. 2, p. 319. Hill sides, common from Monterey to 
San Diego, California. The specimens occur mixed with the preceding, from the larger forms 
of which they are externally undistinguishable. Unless the more obtuse receptacle affords a 
character, it will probably come to be regarded as only an epappose state of B. gracilis. 
BURRIELIA PLATYCARPHA (sp. nov.) : erecta, spithamea, subramosa, laxe pubescens ; foliis sæ- 
pissime trifidis segmentisque filiformi-linearibus; pedunculis sursum incrassatis ; involucri 
multiflori squamis ovatis trinerviis ligulisque oblongo-linearibus sepius Т; corolla imberbi ; 
pappo conformi e paleis 7-8 oblongo-ovatis aristatis achenio squilongis; receptaculo acute 
conico.— Valley of the upper Sacramento ; Dr. Srillman. This is a genuine Burrielia, having the 
pales of the pappus all alike and awned. The scales of the involucre (fully 4 lines long) and 
the ligules are considerably larger than those of the largest states of B. gracilis and B. (Büeria) 
chrysostoma, although fewer. It is related on the one hand to B. gracilis, from which it is a 
once distinguished by its lobed leaves, stouter peduncles, more upright habit, fewer rays and 
involucral scales, the latter much broader as well as larger, 3-nerved and more pointed, and by 
the equally larger and broader as well as more numerous pales of the pappus ; on the other to 
В. (Dichata) Fremontii, which has much smaller heads, a dimorphous pappus of much smaller 
pales, etc.* 
BURRIELIA (PrrLOMERIS) ANTHEMOIDES. Ptilomeris anthemoides, Nutt. in Trans. Amer. Phil. 
Soc. Т, p. 382. Hymenoxys (Oxypappus) calva, Torr. Ё Gray, Fl. 2, p. 381. Grassy places, 
Monterey, California; Parry. Қ 
LASTHENTA (HoLoGYMNE) GLABRATA, Lindl. Bot. Reg. t. 1780. Monterey, California; Parry. 
MowoLoPrA MAJOR, DC. Prodr. 6, p. 14.  Argillaceous hills, San Fernando, beyond Los 
Angelos, California (a glabrate form) ; Parry. 
TRICHOPTILIUM, Nov. Gen. 
Capitulum homogamum multiflorum ; floribus hermaphroditis tubulosis. Involucrum circiter 
10-phyllum, biseriale; squamis squalibus membranaceis, interioribus glandula apiculatis. | 
Receptaculum nudum, scrobiculatum. Corolla cylindrica ; tubo proprio brevi angusto, dentibus 
Anthere ecaudate. Styli rami compressi, glaberrimi, apice tantum capi- 
5 patentibus ovatis. у 
Achenia immatura oblonga, basi angustata, hirsutissima. 
tellato-truncato brevissime hirtelli. 
Pappus corolla brevior, e paleis 5 hyalinis enerviis oblongo-lanceolatis in setas plurimas rigidas 
profunde fissis. Herba nana, hyemo-annua vel biennis, dichotoma, humifusa, floccoso-lanata, 
subglandulosa ; foliis alternis cuneato-oblongis argute inciso-dentatis lobatisve, dentibus cuspi- 
dato-acuminatis ; pedunculis terminalibus et alaribus filiformibus monocephalis ; corollis ochro- 
leucis? 
'TarcHoPrrLIUM INCISUM, Gray, Mss. ; Torr. in Pacif. R. Road Expl. 8; p. 361, #. 5. Psathy- 
rotes incisa, Gray, Pl. Thurber, p. 322. On the desert of the Colorado, in the southeastern 
© It may be remarked that Mr. Bentham refers No. 1791 of Hartweg's Californian collection to Burrielia (Dichata) Fre- 
montii; but all the specimens in my set are entirely destitute of pappus, which could not have been the case in those which 
Mr. Bentham examined. Since the two plants apparently agree in all other particulars, it is most likely that my specimens 
belong to an epappose state of the species; justas ай Nuttall's species of Ptilomeris are probably forms of one. At any 
rate, it is now certain that Ptilomeris and Dicheta, as well as Baeria, must be reduced to sections of Burrielia. 
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