Blake — New and Noteworthy. Compositae 47 
minimi ovales bidentati 3-nervii 3-3.5 mm. longi 1-1.6 mm. lati; 
corollae disci aureae aetate apice purpurascentes tenues in tubo 
et ad basin faucium stipitato-glandulosae in dentibus puberulae 
6mm. longae (tubo 0.8-1mm., dentibus 0.7—1 mm. longis). 
Paleae persistentes apice abrupte et acute mucronulatae ad cari- 
nam angustam et apicem erosum pilosae 8.5 mm. longae. Achenia 
plane compressa nigrescentia in marginibus et in medio latere 
appresse pilosa 4—5.5 mm. longa 2.5-3 mm. lata. Aristae 2 tenues 
sursum ciliolatae basi in utroque latere squamelliformiter ampli- 
atae laceratae ad 3.2 mm. longae. Styli rami longi tenues recurvi 
hispidi acuminati. — GuaremaLa: Agua Caliente, on Barrios — 
Guatemala City Railway, 4 Feb. 1917, E. W. D. Holway 854 
(TYPE in Gray Herb.). 
This interesting new species comes between Simsia setosa Blake 
and S. tenuis (Fernald) Blake in the writer’s revision of the genus. 
From the former it differs in its smaller heads, entire foliaceous 
petiolar disks, and bluntly lobed leaves with a different pubescence; 
from the latter, to which it is more closely allied, it may at once be 
distinguished by the dense short pubescence of its under leaf- 
surface. De 
Stusta seRIceEA (Hemsl.) Blake, Proc. Am. Acad. xlix. 393 
(1913). The type of this species in the Kew Herbarium (Salvin 
& Godman 133) has scattered long hairs with enlarged bases 1n- 
terspersed among the dense short puberulence of the inflorescence- 
branches quite as in the type of S. Ghiesbreghtii (Gray) Blake, 
from which I can separate it only by its pubescent biaristate 
achenes. As at least five cases of such variation within the limits 
of a species are already known in this genus (in S. calva, S. setosa, 
S. exaristata, S. amplexicaulis, and S. sanguinea), it is not mm- 
probable that with further knowledge S. sericea, at present known 
from but two collections, may require reference as a variety to 
S. Ghiesbreghtii, which has been collected but once. : 
Simsta TRILOBA Blake, Proc. Am. Acad. xlix. 393 (1913). Speci- 
mens of this species collected by C. & E. Seler (no. 5398) on sunny 
heights, Hochicaleo, Morelos, 29 Sept. 1910, show it to be an 
annual. 
PreRYMENIUM Purpust Brandegee! Univ. Calif. Pub. pee 
vi. 74 (1914). — P. leptopodum Blake! Proc. Am. Acad. li. 
(1916). — I am unable to distinguish between the type collections 
