ROBINSON AND BARTLETT. — PLANTS FROM GUATEMALA AND MEXICO. 51 
Department of Zacapa, Guatemala, 12 January, 1905, C. C. Deam, 
no. 361 (type, in hb. Gray); Maria Madre Island, Tres Marias Islands, 
May, 1897, E. W. Nelson, no. 4275 (hb. Gray). This species appears 
to. be either monoecious, as in Mr. Deam’s specimen, which has stami- 
nate flowers at the base of some of the pistillate inflorescences, or it 
may be dioecious, as in Mr. Nelson’s specimen, in which all the flowers 
are staminate. The species appears to stand nearest M/. cordifolia 
Liebm., but differs in its ovate rather than suborbicular less rugose 
leaves and wholly sessile inflorescences. 
Polygonum longiocreatum Bartlett, n. sp., caule simplici ca. 7 
dm. alto, ad nodos inferiores radicanti; internodiis 1.5-2 cm. longis 
glabris ; ocreis cylindricis eciliatis 1.5-1.7 cm. longis, in parte inferiore 
caulis quam internodiis brevioribus, plus minusve inflatis, in parte 
superiore imbricatis ; foliis lanceolatis 1.5-3 cm. latis 9-13 cm. longis 
perbreviter petiolatis, apice basique acutis, utrinque glabris pellucido- 
punctatis, margine nervisque subtus scabris; spicis ca. 9, paniculatis 
erectis 4—5 cm. longis ; pedunculis pedicellisque glabris ; ocreolis rubris 
2 mm. longis tri-vel quadrifloris ; calyce rubro 5-partito ; staminibus 7 
styloque (solum in extremo bifido) inclusis ; achenio lenticulari 2 mm. 
longo nigro, ad basin rotundato, ad apicem abrupte acuto, faciebus 
convexis. — In a swamp at Gualan, Department of Zacapa, Guatemala, 
January 14, 1905, C. C. Deam, no. 374 (type, in hb. Gray). The ob- 
vious affinity of P. longiocreatum is with Polygonum spectabile Mart., 
from which it differs in not having glandulose-scabrous peduncles. In 
his treatment of P. spectabile in De Candolle’s Prodromus, Meisner 
cites two earlier-published species of Weddell as possible synonyms. 
Dr. Small accepts, in his ‘‘ Monograph of the N. A. Species of Poly- 
gonum,” one of Weddell’s names, Polygonum ferrugineum, as an avail- 
able name for P. spectabile Mart. Whether he applies the name 
correctly or not, P. longiocreatum may be distinguished from the 
P. ferrugineum of Small’s monograph by the style, which in the former 
is bifid only at the end, and by the long pedicellate flowers, small 
achenes, and short-petioled leaves. 
Ruprechtia Deamii Robinson, n. sp., fruticosa (9 solum visa) ; 
ramis flexuosis glabris in specimine exsiccato sulcato-rugosis brunneis, 
internodiis 7-30 mm. longis, ocreis membranaceis griseo-castaneis vix 
0.6 mm. longis ; foliis magnis oblongis coriaceis penninerviis 10-18 cm. 
longis 5.5—-8 cm. latis integerrimis concoloribus utrinque prominulenter 
reticulato-venulosis subtus in nervis patenter fulvo- pubescentibus et in 
venulis puberulis, basi rotundatis vel modice angustatis, apice obtusis 
vel rotundatis, petiolo brevissimo crassiusculo supra leviter canaliculato 
ca. 3 mm. longo; racemis numerosis fructiferis 2-6 cm. longis solitariis 
