Uroskinnera in Tabasco which represents a hitherto un- 
described species. Its diagnosis is presented in this paper 
by Dr. C. L. Lundell. 
Recently, an unidentified specimen of Uvroskinnera, 
collected in Guatemala in 1885 by Sereno Watson, was 
brought to my attention by Dr. Lyman B. Smith of the 
Gray Herbarium. This proves to be asecond new species, 
the description of which is given below. In 1940, Dr. 
Julian Steyermark collected in Guatemala what proves 
to be this same species, together with additional material 
of Uroskinnera spectabilis. 
In view of the fact that the last few years have seen 
not only the rediscovery of the two older species, but 
also the discovery of two new species, the time seems 
appropriate for a revision of the genus. 
Uroskinnera Lindley in Gard. Chron. (1857) 86— 
Hooker in Bot. Mag. 88 (1857) t. 5009—Bentham & 
Hooker filius Gen. Pl. 2 (1876) 942—Baillon Hist. Pl. 
9 (1888) 4837— Wettstein in Engler Pflanzenfam. LV. 3b, 
(1891) 63, 67—Baillon Dict. Bot. 4 (1892) 240— Hallier 
filius in Bull. Herb. Boiss. 8 (1908) 194, 206—Lemée 
Dict. Genr. Pl. Phan. 6 (1985) 804. 
ORIGINAL DESCRIPTION: “‘Aestivatio imbricato-bilabi- 
ata. Calyx cyathiformis 4-dentatus. Corolla et stamina 
Penstemonis. Stylus planus stigmate furcato. Capsula 
calyce arctissime vestita, loculucide dehiscens. Semina 
scrobiculata, membrana cincta. Herba facie Gesnerae, 
floribus spicatis violaceis. ”’ 
A more extended generic description of Uroskinnera 
is given in Bentham & Hooker filius Gen. Pl. 2 (1876) 
942. The following diagnosis is a translation of that of 
Bentham and Hooker with the addition of minor changes 
necessitated by the discovery of the new species and the 
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