Apr., 1921] 
TRELEASE — NORTH AMERICAN PIPERS 
small (2-4 X 8.5-13 cm.), palmately 5-nerved; petiole very short (3 mm.); 
spikes very short (scarcely 20 mm.) ; peduncle nearly half as long as the 
spike; bracts spatulate; flowers pedicellate with the pedicels unequally 
long up to 2 mm., 5-androus with large subsessile hypogynous anthers; 
ovary conical-ovoid, somewhat constricted at apex; stigmas 3. — Plate V, 
figure 2. 
Northern Honduras, about San Pedro Sula {Thieme S455t the type). 
Piper Tatei n. sp. 
Piper Neesianum Auct., as to Nicaragua. 
General characters of P. Thiemeanum but the leaves minutely puberulous 
beneath and the spikes one-half longer (25-30 mm.). 
Nicaragua, presumably from Chontales (Tate j6y, 1867-8, the type at 
Kew). 
Piper brachypus n. sp. 
Glabrous, or at most puberulent; leaves somewhat obliquely round- 
ovate, blunt-acuminate, rounded or subtruncate or shallowly cordate at 
base, in either case with a short deltoid contraction into the petiole, small 
(5-6 X 7-8 or even 8X9 cm.), palmately about 9-nerved; petiole rather 
short (5-15 mm.); spikes elongated (80-90 mm.); peduncle short (10-15 
mm.); bracts concave, pubescent; flowers short-pediceled with the pedicels 
scarcely 0.5 mm. long, hypogynous, 5-androus, the filaments very short; 
ovary somewhat contracted into a short stylopodium; stigmas 3 or 4, 
subsessile; berries round-ovoid, crowned by the rather evident broad 
stylopodium. — Plate VI. 
Western coast region of Mexico, about Manzanillo {Palmer 1332, 
the type). 
Piper Rosei C.DC., in herb., n. sp. 
Puberulent; leaves somewhat obliquely round-ovate, acuminate, rounded 
or shallowly cordate at base with a short deltoid contraction into the petiole, 
small (6-8 X 8-10 cm.), palmately about 7-nerved; petiole rather short 
(10-15 mm.); spikes elongated (60-90 mm.); peduncle short (5-10 mm.); 
bracts concave, puberulous; flowers short-pediceled with the pedicels 
scarcely i mm. long, hypogynous, 3- or 4-androus, the filaments shorter 
than the rather large anthers; ovary ovoid; stigmas 3, sessile. 
Western Sierra Madre of Mexico (Colomas, Rose 3234, the type, and 
1657)' 
Piper Diguetianum n. sp. 
Transiently puberulous, or glabrous, with the general characters of 
P. Rosei but the spikes shorter (40 mm.), the pedicels reaching a length of 
1.5 mm., and the flowers 5-androus. 
Western Sierra Madre of Mexico (Jalisco, without other data, Diguet, 
the type). 
Piper Mas n. sp. 
Rather transiently puberulent; leaves round-ovate, acuminate, truncate- 
cordate with short deltoid contraction into the petiole, small (5X6 cm.), 
palmately 7- or obscurely 9-nerved; petiole short (10 mm.) ; spikes elongated 
(70-90 mm.); peduncle short (5-15 mm.); bracts concave, glabra te; flowers 
