150 МК. Н. №. RIDLEY ON THE WEST-AFRICAN 
Е. communis, Kunth, Enum. 235. F. polymorpha, Boeckeler, Сур. Berl. Herb. p. 551. 
Sierra Leone, in palmetis humidis ad rivum Cuango, Nov. 1853, no. 7017. 
Ambriz, in humidis graminosis ad austrum vici Ambriz, Nov. 1853, no. 7002. 
Pungo Andongo, Quitage, apud Cuije, no. 6832, sparsim ad ripas rivulorum prope 
Quilanga, no. 68804; ad ripas paludosas fluminis Cuanza, prope Sansamanda, frequens, 
Feb. 1857, no. 6834; in cultis ad rivulum Miege, prope Caghuy, по. 6835 6, Sansamanda, 
no. 6827, Manghe-candumba, no. 6827; Muta Lucala, 6830 с; Lagoa de Quibinda, no. 
6823 b; in uliginosis, prope Cazellas, Preesidium de Guinga ; Umbilla, ad Cuanza, no. 6827. 
Golungo Alto, іп pascuis ad Quilombo Quiacatubia, Jan. 1855, no. 7019. Ambaca, non 
infrequens, in spongiosis ad ripam sinistram Rivi Caringa, no. 7018. 
An exceedingly polymorphic and widely distributed plant. Boeckeler, 1. c., has given to 
the species the new name of polymorpha, citing at the same time some fifty synonyms. 
The oldest name for any of the forms he includes in the species is Е. laxum, Vahl, Enum. 
п. 292 (1805). Kunth, however, gave the name of communis to a number of the forms, 
and consequently either of these names has priority over that of Boeckeler; as, however, 
the names F. laxum, serrulatum, puberulum, and hirtellum, Vahl, apply rather to forms or 
varieties than to the whole species, as now understood, perhaps Kunth's name of communis 
would be the most suitable title for it. 
Е. COMPLANATA, Link, Hort. i. 292. 
Pungo Andongo, ad ripas rivulorum prope Luxillo, Feb. 1857, no. 6835. 
Huilla, in pascuis dumetosis estate inundatis macrioribus prope Eme, fin. Mart. 1860, 
no. 6971. 
Common in the tropics of both hemispheres. | 
Е. RIGIDULA, Kunth, 1. e. 281. F. glomerata, Nees, Сур. Bras. 77. 
Loanda, rarior, uno loco visa in arenosis maritimis Sesuvio-Portulacastro obductis ad 
Praia da Zamba grande, ad S. W. Loande, cum floribus et fructibus, Jan. 16, 1859, по. 
6993. 
Apparently a common and widely spread tropical sea-shore plant. Dr. Welwitsch says 
of it, “late denseque e:espitosa, fibrillis tenacissimis longis subsimplicibus in Portu- 
lacetis (proprius in Sesuvietis) maritimis fixa, culmis basi foliosis, сезрИез Armeriarum 
fingentibus. 
Етмввівтүілв ($ ONcosTYLIs) MACRA, n. sp. Glaucescens, rhizomate breviter repente; 
culmis basi bulboso-incrassatis erectis approximatis gracilibus subpedalibus obscure 
tetraquetris striatis, glabris; foliis culmo multo brevioribus, setaceis, glabris scabris 
cancellatis ; vaginis ferrugineis membranaceis, ore ciliatis ; spicula singula raro altera, 
lanceolata acuta; involucralibus duobus setaceis erectis vel parum recurvis, uno 
spiculum subæquante, vel longiore; squamis lanceolatis acutis carinatis glabris 
ferrugineis, carina pallidiore; stylo trifido rufo parum exserto; caryopsi obovata 
obtuse trigona transversim rugosa, squama dimidio breviore, alba, bulbo parvo. 
