368 PROCEEDINGS OF THE AMERICAN ACADEMY 



Cereus (Lepidocereus) Pringlei. Stems erect, irregularly 

 branching above the base, and the branches also often divided, very 

 stout and reaching a height of 20 or oO feet or more, jointed ; ribs 

 usually 13, very rarely more ; areol;c contiguous upon the ribs, oblong 

 or lanceolate, the younger densely tomentose and with an outer circle 

 of nearly erect more or less unequal ash-colored spines (mostly 6 to 9 

 lines long) and a central stouter one twice longer, all terete; the older 

 areolje naked, with about 1 ') dark flattened spines, mostly widely spread- 

 ing, about an inch long, and deciduous : flowers lateral and scattereil 

 below the summit of the stem, 2.^ inches long, the ovary and tube very 

 densely covered with tawny hairs nearly or quite concealing the lanceo- 

 late scales and outer sepals ; petals spatulate, white tinged with green 

 or purple, 6 lines long: fruit globose, 2 inches long, bearing the per- 

 sistent flower and densely covered with globose cushions (4 or 5 lines 

 in diameter) of dense tomentum intermixed with more or less numerous 

 white bristly spines (^ inch long or less): seeds black and shining, 

 obliquely oblong-ovate, li lines long; hilum oblong, basilar. — This 

 very interesting addition to the C. giganteus group was found by IMr. 

 C. G. Prinijle scattered over the hills and mesas south of the Altar 

 River in Nortliwestern Sonora, within 75 miles of the boundary. It 

 is of more ponderous habit than C. giganteus, and scarcely equalling 

 it in height, with numerous branches starting within two or three feet 

 of the ground. The number of ribs is fewer than in that species, and 

 the flowers are not borne clustered at the summit, but scattered along 

 the ribs for two or three feet below the top. The grooves are about 

 two inches deep, and the ribs upon all the older portions of the branches 

 have usually become quite thornless. The fruit (only remains have 

 been collected) seems to burst irregularly at one side, or perhaps is 

 altogether indehiscent. 



Carum Oreganum. With the habit of C. Gairdneri ; lower leaves 

 more divided, with shorter linear lobes: fruit oblong, 1^, lines long 

 or more. — On -' Wappatoo Island," Oregon, by Nuttall [Edosmia 

 Oregnna, in herb.); E. Hall (n. 20.3); Union County, Oregon, by 

 "W. C. Cusick ; East Humboldt jMountains, Nevada, by "Watson 

 (n. 442, in part) in 1868. The fruit of the more widely distributed 

 C. Gairdneri is ovate and shorter, a line longer but little more. Both 

 are perennial, perpetuating a series of tubers for several years. 



Ctmopterus bipinnatus. Cespitose, the short branches of the 

 rootstock covered with the crowded remains of dead leaves, glaucous, 

 rongh-pubcrulent : leaves pinnate with 4 or 5 pairs of short (3 to 5 

 lines long or less) subequal leaflets, wliicli are pinnately divided, the 



