150 PROCEEDINGS OF THE AMERICAN ACADEMY 



closed sinus, mostly hastate with broad rounded or truncate and usu- 

 ally sinuate lobes, the middle lobe acute : staminate flowers minute 

 and very few, clustered on very short peduncles, green, hispid, tubu- 

 lar-campanulate, shortly toothed : anthers oblong, nearly straight : 

 pistilhite flowers in separate axils ; corolla open-campanulate with 

 spreading 5-cleft margin, about 3 Imes long; ovary narrowly ob- 

 long, 4 lines long, exceeding the peduncle, obtusely quadrangular, 

 slightly hispid on two opposite sides ; placentae 4 (as in A. Palmeri), 

 many-seeded. — Under ledges near Guadalajara; November, 1888 

 (n. 2140). 



Mamillaria (Anhalonium) furfuracea. Tubercles flattened 

 at base (about 15 lines broad), triquetrous above, cariuate beneath, 

 the triangular terminal surface (about an inch broad by ^ inch) 

 mamillate and (as also the lower surface) minutely furfuraceous- 

 punctulate, the apex terminating in a suborbicular tomentulose 

 areola (becoming naked) : the centre a mass of silky-villous hairs, 

 which persist in the axils of the tubercles : flowers 12 to 15 lines 

 long, the inner petals (9 lines long) white or pinkish, the sepals 

 brownish. — At Carneros Pass; September, 1889 (n. 2580). 



Prionosciadium Watsoni, Coulter &, Rose, in herb. At the 

 time of the description of this genus with its three species (Proc. 

 Amer. Acad. 23. 275) the specimens of Peucedanum Mexicanum 

 (1. 0. 17. 361), from near San Luis Potosi, were overlooked. Ex- 

 amination shows this to be a fourth species, as has been noted in the 

 Gray Herbarium by Prof. Coulter and Mr. J. N. Rose, who have 

 named it as above. Fruiting specimens collected by Mr. Pringle 

 near Guanajuato in 1888 (n. 2298) were distributed under this name, 

 and it was again found by him in October, 1889, near the same 

 locality (n. 3002). These are the same as Dr. Palmer's n. 275 from 

 the 8ame region, in very young fruit, which was unfortunately named 

 at a venture Ciciita (?) linearifolia (1. c. 22. 415). It now appears 

 that the species is very variable in its foliage, the leaflets ranging 

 from elongated linear and serrate to lanceolate and laciniately dis- 

 sected. The fruit also varies in the character of the epicarp, which 

 is usually thin but sometimes quite corky. The vitta3 are nearly 

 contiguous about the seed. 



Peucedanum (?) Madrense. Acaulescent (?), glabrous ; root- 

 stock thick and branching, apparently perennial : basal leaves large, 

 on long stout sheathing petioles, twice ternate or ternate-quinate ; 

 leaflets ovate, sharply serrate, more or less lobed, 1 or 2 inches long : 

 rays about 1 2, an inch long or more : fruit oblong-ovate, 6 lines long 



