156 Hill. — A Revision of the G cop hi Ions Species of Pepercmia. 
Guatemala. Dep. Huehuetenango ; Sactos, inter saxa, Caec. et 
Ed. Seler , no. 2731. ‘ Estancia de la Virgen ’ ad imam arborum, ibid., 
no. 2743 (Herb. Berol.). 
P. campylctropa, A. W. Hill, sp. nov. 
Tuber hypogaeum, placentiformi-globosum, circa 1-2 cm. latum, 
•8-1-2 cm. altum,radicibus fibrosis instructum.ex uno loco prope apicem ortis. 
Caulis subnullus. Folia viridia in rosulam disposita ; petiolus 3-8 cm. vel 
saepius 15-20 cm. longus ; lamina suborbicularis, 1 -5-3-5 cm. diametro, 
e medio peltata, magis minusve membranacea vel coriaceo-membranacea, 
venis 6-9 inferne distinctis. Amenta ± densiflora, cum pedunculis 8-20 
vel interdum 30 cm. longa. Bractea ovata, acuminata, circa 1 -5-1-7 cm. 
longa, -8— 9 cm. lata. Stamina subsessilia. Bacca globoso-ovata, atro-fusca, 
circa 1-7 mm. longa, i-2 mm. lata, verrucosa, apice scutulo late conico 
praedita. Semen globoso-ellipticum -96 mm. longum, -86 mm. latum. 
P. umbilical a, Kunth in H. B. and K. Nov. Gen., I, p. 59, PI. XV, 
Fig. 1. Hill, in Ann. Bot., xx, 1906, p. 407. PI. XXX, Fig. 31. 
P. umbiiicata , R. and P., l.c. Miq., Syst. Pip., p. 70. C. DC. in DC. 
Prod., XVI, i, p. 393. Dahlst., l.c., p. 31. 
P. umbiiicata , var. macrophylla , C. DC. in DC. Prod., XVI, i, p. 394. 
Mexico. In locis excelsis scopulosis frigidis regni Mexicani, prope 
Sta. Rosa de la Sierra et Los Ioares alt. 2,600 m. Humboldt (Herb. 
Berol.); Humboldt , no. 764 (Herb. Willd.) ; Uhde , no. 253 (Herb. Berol.). 
Pedregal ; Vallee de Mexico ‘ among damp rocks with Ferns,’ Bourgeau , 
no. 418. Santa Fe ; Vallee de Mexico, Bourgeau , no. 631 (Herb. Kew, 
Herb. Boiss., Herb. DC.). State of Michoacan ; ‘damp hillsides’ prope 
L. Patzcuaro, Pringle , no. 4124 (Herb. Kew, Herb. Boiss., Herb. Berol.). 
San Luis Potosi ; 22° N. 6,oco-8.ooo ft., no. 802, Parry and Palmer (Herb. 
Kew, Herb. Boiss.) 
P. sp. dubia ; Mexico. Graham , 1830 (Herb. Kew). Mexico; Zuna- 
pan, Coulter , no. 1399 (Herb. Kew). 
The plants included in this species differ considerably in the external 
morphology of their leaves. In the specimens collected by Pringle the leaf 
lamina is delicate, whilst in the Parry and Palmer specimens, &c., the 
lamina is fairly stout and rather coriaceous. In the characters of the 
bract, stamens, and fruit, however, there seems to be a fairly close agreement, 
so that the differences in general habit are probably due to the nature 
of the situations from which the various specimens have been collected. 
% D. Rhizomatosae. 
P. macrandra, C. DC. (descr. emend.). 
Rhizoma hypogaeum, repens, circa 3 cm. longum, nigrum, ram is 
+ erectis circa 1 cm. longis, radicibus fibrosis instructum. Folia viridia ; 
petiolus 10-15 cm - longus ; lamina late ovata, acuta, 6-7 cm. longa, 
