ROBINSON AND BARTLETT. — PLANTS FROM GUATEMALA AND MEXICO. 67 
floribus in eymas racemosas 15-30-floras axillares terminalesve aggre- 
gatis ; cymarum bracteis perparvis ovato-deltoideis albidis ; pedunculis 
3-8 mm. longis ; pedicellis 5 mm. longis breviter supra basin articu- 
latis ; sepalis . ca. 1.6 mm. longis puberulis “subaequalibus ; ; petalis 
glabris in fructu persistentibus, duobus posticis ovatis apice truncatis 
2.4 mm. longis, duobus intermediis aequilongis subquadratis breviter 
apiculatis ad basin antrorsum brevi-auriculatis, antico 1.9 mm. longo 
trinervio inter mediam apicemque constricto, parte inferiore (ungue) 
ampulliformi, parte superiore (limbo) multo parviore suborbiculari 
apice bilobata ; staminibus 2 mm. longis inter antheras connatis tubum 
formantibus, tribus posticis triangulo-appendiculatis, filamentis per- 
brevibus liberis, duobus anticis appendicibus connatis, filamentis extus 
ad basin glandulae late scutiformi adnatis, glandula gibbositati petali 
antici conformali, loculis duobus contiguis antherarum anticarum 
abortivis ; stylo corolla paululo longiore ; capsula glabra viridi 6 mm. 
diametro 9 mm. longa. —Gualan, Department of Zacapa, Guatemala, 
19 January, 1905, C. C. Deam, no. 385 (type, in hb. Gray). A species 
well marked by the combination of alternate leaves, numerous cymose 
axillary inflorescences, and short lower petal. In general structure it 
is most closely allied to such South American species as Jonidium 
atropurpureum St. Hil. and J. Sprucei Eichl. 
Ipomoea anisomeres Robinson & Bartlett, n. sp., volubilis ; caule 
gracili lignescenti glabro subtereti 3-6 m. longitudine a cortice brun- 
nescenti-griseo obtecto aetate papilloso-scabrato ; foliis ovatis integris 
profunde sinu patenti cordatis acutiusculis vel subattenuatis et in 
apice emarginato cum nervo excurrenti apiculatis penninerviis 6-11 
em. longis 4-7 em. latis utrinque glabris subtus pallidioribus ; petiolo 
gracili glabro 3-5 cm. longo ; pedunculis axillaribus solitariis 3.5-6 cm. 
longis in summa parte composite cymoso- ramosis ; pedicellis 1.5—2 cm. 
longis modice gracilibus sursum plus minusve incrassatis glabris ; sepalis 
glabris margine albis 2 exterioribus 1-3 mm. Jongis suborbicularibus 
obtusis vix herbaceis 3 interioribus 1 cm. ] 
corolla late infundibuliformi alba vel praesertim in faucibus purpuras- 
centi 6.5-7 cm. longa, limbo 4-5 cm. lato subintegro, faucibus 1 cm. 
diametro 3.5 cm. longis cylindratis deorsum in tubum brevem (ca. 1 
em. longum) proprium angustatis ; capsula ovoidea acuta 10-12 mm. 
longa glabra biloculari ; seminibus 4 griseo-fuscis breviter pubescenti- 
bus.—Gualan, Department of Zacapa, Guatemala, 12-14 January, 1905, 
C. C. Deam, nos. 318 and 319 (types, in hb. Gray). This species appears 
to fall into § Inaequisepalae, as defined by Peter in Engl. & Prantl, Nat. 
Pflanzenf. iv. Ab. 3,29. The specific name alludes to the strikingly 
unequal sepals. 
