OF ARTS AND SCIENCES: JUNE 11, 1867. 843 



and single umbel of mature fruit, sent by Dr. Kellogg, enable me to 

 confirm the suggested near relationship of this plant with D. arguta, 

 with which it closely agrees except in the particulars indicated. The 

 leaves have the stouter petiole first ternate, their divisions again 

 ternate and bearing mostly 3 leaflets on the lateral divisions and 5 on 

 the middle one, or else the lateral primary divisions are simply 5-7- 

 foliolate. Fruit barely 3 lines long, laterally contracted, the salient 

 ribs not so wing-like as in D. arguta, but otherwise similar. The 

 broad intervals contain 2 or 3 vittte. The mature seed is so involute 

 that the cross section is circular and the albumen completely encloses 

 a central cavity. This is also the case in Conium and Smyrnium when 

 fully ripe. Carpophore wholly entire. 



Deweta Kellogii : acaulis, subpedalis ; foliis triternatis ; foliolis 

 parvulis 3 - 5-fidis, segraentis cuneatis versus apicem argute dentatis 

 incisisque, dentibus cuspidatis ; umbella in scapo simplici solitario, 

 involucellis e bracteis parvis subulatis ; calycis dentibus obsoletis ; 

 fructu didymo (lin. 2 longo et lato) ; mericarpiis turgidis ; jugis fili- 

 formibus, lateralibus commissurara angustam marginantibus ; valleculis 

 bivittatis. — Bolinas Bay, near San Francisco, June 23, with mature 

 fruit, Dr. A. Kellogg. Caudex or root tuberous-thickened (as prob- 

 ably in both the preceding), its branches sending up a tuft of leaves 

 about a span high, and a mostly taller naked scape. Involucre none. 

 Rays of the umbel one or two inches, of the umbellets 2 or 3 lines 

 long. Styles capillary. Fruit smooth. Carpophore entire, or only 

 minutely cleft at the apex. Mature seed circular iii cross section, with 

 a large central cavity. [As this sheet passes to press I find that I have 

 a flowering specimen, which was collected by Mr. Bolander, on Mission 

 Hills, near San Francisco: scape 1-leaved below; flowers yellow.] 

 Doubtfully referred to Deweya, but of widely different genus, is 



Oreosciadium ACAVL'E=.Dewega? acaulis, Torr. Bot. Whippl. 

 Exped. Pacif. R. R. Survey, 4, p. (94) 38. As to the fruit a clear 

 congener of 0. montanum, Wedd., but with conspicuous calyx-teeth. 



Apium (Ammoselinum) Vov'E.i=:AmmoselimimPopei,ToYY.&. Gray 

 in Pacif. R. R. Surv. 2, p. 165. C. Wright collected this in Texas, in 

 1851 ; but it is in Berlandier's collection of 1828, No. 1789. The 

 carpophore is not 2-parted, as described, but merely 2-toothed at the 

 apex ; and the plant will range near Leptocaulis and Helosciadium 

 leptophyllum, except for the. longer fruit and the corky development of 

 the lateral ribs filling the commissure. 



