Prare III. 
CHARA CORONATA, Ziz. INED. 1814; A.BR., FLorA, 1835. 
Var. Schweinitzii, A.Br., Frora, 1835. 
Ch. foliolosa, Schweinitz (Ch. foltolosa, Willd., in Act. Acad. Berol. 1803, p. 58, 
and in Muhlenb. cat. pl. Amer. sept. 1813. p. 18, is probably Ch. gymnopus var. 
Humboldtii A. Br.). Ch. opaca Schweinitz now Agardh. 
Illustration : WKutzing, Tab. Phycol. VII. Tab. 79, 1. 
Eucnara; HaprosterHana. Circle of stipules consisting of a single series of cells. 
(Developed into stipules. Rudimentary cells are found in species belonging to 
this section: see Plate, Fig. B.) 
Unistieucata: A single stipulary cell at the base of each leaf. 
Ecorticata: Cells of cortex not developed ; internodes naked. 
Moncca : Sporangia and antheridia borne on the same plant. 
Cuara Coronata, as defined by A. Braun in his Characez of Africa, 1868. ‘‘ Folia 
verticilli g-11, articulis 4-6, elongatis 3-5, ultimo brevissimo mucroniformi. //iola 
in omnibus geniculis prasentia, geniculi supremi cum mucrone terminali coronulam 
3-ad 5-cuspidatam formantia. Ao/io/a posteriora breviora, depauperata aut omnino 
deficientia, anteriora sporangium subzequantia, rarius sporangio longiora, szpius 
breviora. S#fule foliolorum fere magnitudine. Avtherédia et sporangia in eadem 
geniculo haud raro geminata vel ternata. Sporangii nucleus ater, indumento calcareo 
carens, striis a latere conspicuis 7-12,” includes, in addition to the synonymes given 
above, Ch. Braunti Gmel., Fl. Bad., 1826; Ch. flexilis Amici, 1827 ; Ch. cortiana 
Bertoloni, 1854 ; Ch. ¢zvolucrata, Rogh., 1832; Ch. Oahuensis Meyen, 1835; Ch. 
eremosperma Rupr., 1846; Ch. Stalzz Visiani, 1852: and comprises the following 
varieties. 
var. BRAUNI, mdcrosperma. Nucleus 0.42-0.55 m.m. in diameter; bracts mostly 
shorter than sporang. ; no bracts on dorsal aspect of leaf. (The common European 
form. ) 
var. PERROTTETII, macrosperma. Nucleus 0.60-0.65 m.m. in diameter, bracts equalling 
the sporangium. (African.) 
var. SCHWEINITZII, mediasperma. Nucleus 0.52-0.60 m.m. in diameter (T. F. A.)- 
Bracts exceeding Sporang., developed often on the posterior aspect of the leaf ; 
exhibiting two extreme forms: forma macroptila (longibracteata), the Ch. foliolosa 
of Schweinitz ; forma microptila (brevibracteata), the Ch. opaca Schw. non Agardh. 
