OF ARTS AND SCIENCES: JUNE 11, 1867. 345 



are tliinner-leaved than in C. inaculata, and with the uppermost leaves 

 and the 3-5 superior pinnas of the lower and radical leaves of simple 

 leaflets (or sometimes the lower 2-lobed), giving the plant the aspect 

 of a Stum.* Tlie involucels are mostly of broader bracts and the 

 fruit of rather broader outline than in 0. maculata ; the ribs all very- 

 corky : carpophore 2-parted : transverse section of the seed orbicular. 

 C. maculata, besides the difference in the leaves, and especially in their 

 venation, has the marginal jugfe, as seen in cross section, very much 

 larger than the others, and the seed either flat or decidedly concave on 

 the face. 



PiMPiNELLA APiODORA : glabra, bi-tripedalis ; foliis ternato-decom- 

 positis, caulinis petiolo primario spathaceo, foliolis inciso-pinnatifidis 

 trifidisve, segmentis oblongis vel subcuneatis incisis ; involucellis e 

 bracteis lineari-subulatis vel setaceis ; floribus albis nunc roseo tinc- 

 tis ; fructu late ovato subdidymo, jugis prominulis. — Rocky hills along 

 the coast of California from Mendocino Co., Bolander, to San Fran- 

 cisco, Bolander, Kellogg, &c. Apparently not rare, it is singular that 

 it has remained so long unnoticed. The fleshy root, stems, and seeds 

 are strongly imbued with the odor and flavor of Celery. The fully 

 mature fruit is yet unknown ; but the form of the fruit and seed, the 

 numerous vittte, the absence of calyx-teeth, and the conspicuous pul- 

 vinate stylopodia indicate the genus ; which is new to this continent, 

 excepting P. integerrima (Zizia integerrima, DC), referred to it by 

 Bentham and Hooker. 



PODOSCIADIUM, nov. gen. Scandicinearum. 



Flores polygami, albi. Calycis dentes prominentes, tenues, scariosi 

 vel petaloidei, subulati. Petala obovata, acumine inflexo vel involute 

 longo, ob costam superne impressam emarginata. Stylopodia brevia, 

 conica. Fructus oblongus, a latere pi. m. compressus, ad commisuram 

 haud constrictus, apice subcontractus, jugis filiformibus vel angustissi- 

 mis, valleculis latis 1 - 2-vittatis. Semen facie late sulcatum, sulco 

 linea centrali prominula percurso, sectione transversa reniformi. Car- 



f SiUM LiNEARE, Michx. I must dissent from the statement in Benth. & 

 Hook. Gen. PI. p. 888, that in this " valleculis perperam 2-3-vittatis dictis " ; both 

 this and S. Carsomi being found on re-examination to accord with the characters 

 assigned in my Manual, except that the vittte are very seldom solitary, even in the 

 dorsal intervals. I may add, as farther separating them from Apium, that both 

 species have a manifest, but very attenuated, completely 2-parted carpophore. 



VOL. VII. 44 



