acquisition of more accurate knowledge in regard to the 
habit of the older ones. 
Calyx tubular-campanulate, with four or five short, 
setaceous or puberulent teeth. Corolla tube elongate, 
enlarged above; limb spreading, 5-parted, with broad, 
flat, slightly unequal lobes, the two outer posterior. 
Stamens four, didynamous, included, with filiform fila- 
ments; locules of the anthers divergent, confluent api- 
cally. Staminodium posterior, linear-clavate, shorter or 
longer than the stamens. Style elongate, apically stig- 
matose, shallowly or deeply bifid; ovules numerous in 
the locules. Capsules globose, almost included by the 
calyx, loculicidally dehiscent; valves entire, septate at 
the middle with connate placentae. Seeds numerous, 
small, scrobiculate, enclosed by a thin membrane, or 
naked. Shrubs, softly villous or puberulent-hirtellous. 
Leaves opposite, petiolate, velutinous or hirtellous, cre- 
nate or dentate. Spike or raceme terminal, dense or rather 
lax, secund. Flowers rather large, rose-purple or yellow, 
declinate, subsessile or short-pedicellate, with two seta- 
ceous or puberulent bracts at the base. 
Tyrer Speecites: Uroskinnera spectabils Lindley. 
Uroshinnera consists of four species endemic to south- 
ern Mexico and adjacent Guatemala. One species occurs 
in Oaxaca, one in Tabasco, and two in Guatemala. 
KEY TO THE SPECIES OF UROSKINNERA 
A. Flowers yellow; leaves membranaceous, pubescent and hirtellous 
beneath ; calyx and floral bracts puberulent; staminodium longer 
than fertile stamens 
Alavida 
AA. Flowers rose-purple ; leaves chartaceous, sericeous (usually dense- 
ly so) beneath; calyx and floral bracts villous-hirsute; stamino- 
dium shorter than fertile stamens 
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