448 PROCEEDINGS OF THE AMERICAN ACADEMY 



a broad dilated base (4 lines long) closed by a thin shallow-funnelform 

 diaphragm, the geniculate tube (6 lines long) narrowest in the middle 

 and bordered by a triangular-subcordate limb nearly an inch long: 

 stamens 5 : style-column very short, the fleshy lobes erect, oblong, 

 obtuse : capsule globose, 6 lines long, abruptly stipitate. Tequila, 

 under bananas. (-113.) — Throat spotted with dark brown, the limb 

 and tube lighter. 



Aristolochia longipes. Of the same section, the long trailing 

 herbaceous stems from a thick branching root : leaves cordate with a 

 shallow sinus, acute, somewhat scabrous, 4 inches long and broad ; 

 petioles stout, an inch long or more : flowers in very slender elongated 

 axillary panicles ; bracts cordate, 3 or 4 lines long ; peduncles 3 to 5 

 inches long, the floral bracts lanceolate ; ovary densely villous, linear, 

 8 lines long, the slender base nearly naked : calyx with oblong dilated 

 base (5 lines long) closed by a fleshy funnelform diaphragm, the 

 broad tube (6 or 7 lines long) abruptly recurved on itself, very glabrous 

 within, terminating in a lanceolate limb (2 inches long) surrounding 

 the throat : stamens 5 : lobes of the stigma fleshy, erect, short-trian- 

 gular, acutish : capsule oblong (10 lines long) upon a stout clavate 

 channelled stipe, dehiscing from the summit. Barranca, running over 

 rocks. (139.) — Color a dull greenish purple. 



Aristolochia Guadalajarana. Of the same section : stems 

 herbaceous from a branching root, trailing, pubescent with soft spread- 

 ing hairs ; leaves very shortly petiolate, ovate to ovate-oblong, obtuse, 

 cordate at base, 2 inches long or less, somewhat appressed-pubescent, 

 ciliate, reticulately veined beneath : peduncles 4 lines long; bract leaf- 

 like: ovary linear, pubescent: calyx straight, the oblong dilated base 

 (G lines long) guarded at the mouth by a rather rigid narrow in- 

 truded tube ; calyx-tube narrow (8 lines long), with a dark brown 

 oblong obtuse or emarginate limb (15 lines long) surrounding the 

 mouth: stamens 5, as long as the column: capsule oblong, obtuse, 

 nearly an inch long, stipitate. Rio Blanco, in moist places ; June. (27.) 



Piper leucophyllum, C. DC. A small tree in thick clumps. 

 Rio Blanco, in a deep barranca near water; October. (676.) 



Piper ? Shrub, 8 feet high, glabrous, the thin ovate acute 



or shortly acuminate basi-nerved leaves 2 inches long or less, on short 

 slender petioles: spikes slender, rather shorter than the leaves; sta- 

 mens apparently 4 or more. Barranca, in dense moist shade. (122.) 



Peperomia gracillima. With the habit of and closely allied to 

 P.umhiUcata: root bulbous : leaves orbicular, 1^ inches in diameter 

 or less, centrally peltate, green above, cupreous beneath : aments ses- 



