28 Rhodora [FEBRUARY 
and Mississippi, the achene is provided with a much shorter and more 
abrupt base. These forms may be defined as follows. 
RyYNCHOSPORA CAPITELLATA (Michx.) Vahl var. minor (Britton) 
(typical form).— Rynchospora glomerata var. minor Britton! Trans. 
N. Y. Acad. Sci. xi. 89 (1892), also as Contr. Columb. Coll. No. 26. 
15.— Aristae retrorsum barbatae.— The common form, from Me. and 
Ont. to Fla. and Mo.— Fig. 2. 
Var. controversa.— Aristae prorsum barbatae.— PENNsY LVANIA: 
moist meadow, Frazer, Chester Co., 14 Aug. 1910, E. B. Bartram 1129: 
in part (TYPE in Gray Herb.). MARYLAND: on bank, south of Havre 
de Grace Park, Chesapeake Bay region, 28 July 1902, G. H. Shull 
129.— Fig. 3. 
Var. discutiens (Clarke).— Rynchospora glomerata var. discutiens 
Fics. 1-5.— Fig. 1. Rynchospora glomerata (L.) Vahl (Curtiss 5739, Florida). Fig. 2. 
R. capitellata (Michx.) Vahl var. minor (Britton) Blake (Gray, N. Am. Gram. &c. Exs. 94). 
Fig. 3. R. capitellata var. controversa Blake (Bartram 1129 p. p.). Fig. 4. R. capitellata var. 
discutiens (Clarke) Blake (Buckley). Fig. 5. R. capitellata var. leptocarpa (Chapm.) Blake 
(Curtiss 5926).— All X 10. 
Clarke! in Britton, Trans. N. Y. Acad. Sci. xi. 89 (1892).— Aristae 
laeves vel ut dicitur apice barbatae— NortH CAROLINA: mountains, 
Buckley (corype Couu.). INDIANA: sterile damp places, Millers, 
28 Aug. 1908, L. M. Umbach (in A. Kneucker, Cyp. &ec. Exsice. no. 
184).— Fig. 4. 
Var. leptocarpa (Chapm.)— Rynchospora glomerata var. leptocarpa 
Chapm. in Britton, Trans. N. Y. Acad. Sci. xi. 88 (1892).— Achenium 
breve basi abrupte breviterque stipitatum; aristae retrorsum bar- 
batae.— Sourn Carouina: Aiken, July 1866, Ravenel. FLORIDA: 
near De Funick Springs, 6 July 1897, Curtiss 5926. MISSISSIPPI: 
Saratoga, 3 Aug. 1903, Tracy 8616.— Fig. 5. 
The achene of R. glomerata (L.) Vahl (R. paniculata Gray) is shown 
for comparison in fig. 1. 
(To be continued.) 
Gray HERBARIUM. 
