CHARAOE^. 



The Characese of Welwitsch's Herbarium were determined by 

 Alexander Braun and included in liis " Characeen Afrika's " (in 

 Monatsber. Preuss. Akad. Wissensch. Dec. 1867, pp. 782-800, 

 873-944 ; Berlin 1868). A few subsequent modifications ap- 

 peared in Braun's posthumous "Fragmente einer Monographie 

 der Characeen," edited by Dr. Otto Nordstedt in Abhandl. Konigl. 

 Akad. Wissensch., pp. 211, tt. 7 ; Berlin 1882. 



1. NITELLA Agardh Syst. Algar. p. xxvii. (1824). 



1. N. leptoclada A. Br. in Berlin. Monatsber. Preuss. Akad. 

 Dec. 1867, p. 880 (1868). 



HuiIjLA. — In company with species of Ottelia and Blyxa in very 

 deep woodland ponds near Lopollo, at the spot where the Munanos 

 pitched their camp ; with fr. May 1860. No. 499. 



LOANDA. — Rather rare at the sides of deep rain-water pools near the 

 country house (Mnseque) of Luiz Gomes in the plain above Loanda 

 (not seen by Welwitsch in 1853-4) ; with unripe fr. 10 Jan. 1858. 

 No. 495. 



2. N. huillensis A. Br. et Welw. in Berlin, Monatsber. Preuss. 

 Akad. Dec. 1867, p. 892 (1868) ; confer tab. vi. fig. 164 in Berlin. 

 Akad. Abhandl. 1882. 



HuiLLA. — Growing in mud or on small stones under running water ; 

 fronds csespitose, monosiphoneous, shining when dry ; ramifications 

 bearing fruit, and coated with a hyaline substance of a Nostoohoid- 

 brown appearance, and fused into a globule. Common in the Mupanda 

 rivulet, which flows into Lake IvantSla ; also in the Ema rivulet in 

 Monino ; with fr. 1 March and 11 April 1860. No. 496. 



2. CHARA Yaill. ; Agardh. Syst. Algar. p. xxvii. (1824). 



1. C. foetida A. Br. in Ann. Sci. Nat. Ser. 2. I. p. 354 (1834); 

 Plora xviii. i. p. 63 (1835). 



Var. suMnermis A. Br. Schweiz. Oharac. p. 23 in Schvveiz. 

 ■Gesellsch. Neue Denkschr. x. (1849); in Berlin. Monatsber. 

 Preuss. Akad. Dec. 1867, p. 942. 



MossAMEDES.— In ponds alongside the banks of the river Bero near 

 the town of Mossamedes ; a single specimen, June 1859. No. 600. In 

 pools by the banks of the river Caroca (Croque) near Cabo Negro 

 <16° S. lat.), 12 geographical miles' distance from the mouth of the 

 river ; abundant in the river near S. Joao de Croque ; with f r. 2 Sept. 

 1859. No. 498. Growing in company with Marsilea, and mixed with 

 •a few fragments of Chara angolensis, in small sluggish streams, entirely 



