160 C. B. CLark«: 
Carex hysterieina Schkuhr Biedgr. II (1806) p. 69 t. Fff fig. 127; 
Willd. Sp. Pl. IV (1805) p. 282; Kunth Enum. II p. 497; Boott 
Carex I p. 62 t. 165; Boeck. in Linnaea XLI (1877) p. 323. 
Carex hystrieina L. H. Bailey in Proc. Amer. Acad. XX1II (1886) 
p- 69. 
Hab. in Jamaica ad Salt Hill: Herb. Jam. Bot. Departm. n. 2081. 
Distrib. Civitates Americae sept. unitae. 
XXV. Hypolytrum L. ©. Rich. 
Flores unisexuales, 3 in unaquaque spicula, 2 inferiores maseculi 
monandri oppositi, summus foemineus (pistillum nudum) terminalis. 
Stylus basi tumidus aut bulbosus, rami 2 lineares. Nux parva, tur- 
gide biconvexa, stylobasis cum nucis apice fusa. — Spiculae perparvae, 
in spicas (Seörpi spieulis similes) capitatae, spicularum bracteis spiraliter 
imbricatis. Glumae masculae naviculares, in carina pilosulae, liberae 
vel interdum (imo altius) connatae. Inter flores 2 masculos et pistillum 
1—4 glumae vacuae (flores masculi steriles) spiraliter rarius interpo- 
nuntur. Spicae (e spieulis pluribus exstructae) paniculato-corymbosae, 
aut in caput compositum plus minus contractae. 
Species 42, tropicae raro paullo extratropicae, in utroque orbe 
sparsae. 
241. Hypolytrum longifolium Nees, praeter glumarum carinas 
glabrum, rhizomate tenui; culmo 3—7 dm. longo, graciliore, apice tri- 
gono parum scabro; foliis omnibus culmi basin versus sitis, culmum 
saepe superantibus, 3—11 mm. latis; panicula 4 cm. longa 3 cm. lata, 
5—35-spieigera, ramis divaricatis; bractea ima paniculam multo super- 
ante, cum foliis consimili; spieis 5 mm. longis, oblongis aut proventu 
ellipsoideis, bruneis; glumis 2 masculis elliptico-oblongis, bractea bre- 
vioribus, glumis vacuis (inter glumas masculas et pistillum) nullis; nuce 
cum glumis aequilonga, obseure rugosa viridescente, apice (stylobasi cum 
nuce fusa) pallido; stylo ipso perbrevi, ramis 2 linearibus. 
Hypolytrum longifolium Nees! in Linnaea IX (1834) p. 288; 
Kunth Enum. II p. 271; Boeck. in Linnaea XXXVII (1871) p. 1883. 
Hypolytrum fuscum Nees! in Mart. Fl. Bras. II pars I (1843) 
p. 67; Boeck. in Linnaea XXXVII (1871) p. 123. 
Seirpus longifolius L. C. Rich. in Act. Soc. d’Hist. Nat. Paris I 
(1792) p. 106. 
Hab. in Trinidad: Hart n. 3210. 
Distrib. in Guiana frequens, usque ad Brasiliam australem sparsum. 
