904 CIV. POLYGONACEiE. [Poli/gonum 



L. ; Welw. herb. no. 6974) and reeds, purplish, sparingly branched ; 

 flowers whitish-rosy. In swampy places at the mouth of the river 

 Giraiil, plentiful ; fl. 19 July 1859. No. 5369. 



HuiLLA. — At LopoUo ; fl. Dec 1859 : also in wet wooded places by 

 the Monino ; fl. Jan. 1860. No. 5368. A glaucescent herb. In 

 marshy places at the river Panda ; fl. and fr. Feb. 1860. No. 5371- 

 Floating in the river Caculuvar, near lake Ivantfila, in company with 

 a Commelinacea (cf. Floxcopa glomerata Hassk. ; Welw. herb. no. 

 6590) ; fl. end of Feb. 1860. No. 5370. 



Cape de Verde Islands. — By waterfalls behind Villa de Praia, in 

 the island of San Thiago, in company with Lemna niiuor L. ; fl. and 

 fr. Jan. 1861. No. 5366- 



I have not seen the type of Poiret's species, which was found in 

 Barbary ; but it apparently belongs to the same species as our 

 specimens. 



3. P. lanigerum R. Br. Prodr. p. 419 (1810). 



Var. y. africanum Meisn. in DC. Prodr. xiv. p. 117 (1856). 



Barro do Bengo. — At the margins of the river Bengo, near 

 Quifandongo, plentiful ; fl. and fr. 12 Sept. 1854. No. 5365- 



PuNGO ANDONGO.^An ascending or erect herb, 2 to 4 ft. high ; stem 

 fistulose, rather thick ; flowers whitish-rosy. In marshy places at the 

 banks of the river Luxillo, near the bridge, towards Cambambe, rather 

 sparingly ; fl. and fr. April 1857. No. 5364. 



HuiLLA. — A sparingly branched, erect herb, 4 to 6 ft. high. By 

 streams among tall grasses, near Lopollo ; fl. and fr. May 1860. 

 No. 5363. An erect, nodose, apparently annual herb, 3 to 5 ft. high ; 

 leaves ovate-lanceolate, acuminate, white-woolly above, snow-white- 

 tomentose beneath ; spikes paniculate, rather thick, rosy. By river 

 banks near Lopollo, at Ivantala ; fl. and fr. Feb. and April 1860. 

 Coll. Carp. 866. 



This plant, in conjunction with P. tomoitosum Willd., Mirahllis 

 Jalaj^a L., and Caiiiia orle>/talh Rose, forms the mass of the herbaceous 

 vegetation along streams in Pungo Andongo. 



4. P. limbatum Meisn., Z.c, p. 123. 



HuiLLA. — In marshy wooded places from Ferrjio da Sola towards 

 Jail, and seen nowhere else ; fl. Feb. 1860. No. 5374. 



5. P. senegalense Meisn. Men. Polyg. p. 54 (1826) ; Welw. in 

 Ann. Cons. Ultramar. Lisb. No. 7 (August 1854), p. 80. n. 21. 



Barra DO Bengo. — A handsome plant ; stem as thick as a man's 

 finger, some thicker, fistulose, brilliantly red, 4 to 10 ft. high, decumbent 

 or even floating. At the margins of the river Bengo, between Quifan- 

 dongo and Prata, at the convent of Santo Antonio ; fl. Dec. 1853. 

 No. 5359, partly. 



IcoLO E Bengo.— A herb, 4 toG ft. high ; stem sometimes decumbent 

 sometimes ascending, remarkably and widely fistulose, a finger thick, 

 reddish purple ; flowers whitish rosy. At the banks of the river Bengo 

 (Zenza), from Santo Antonio to Tamdambondo, sparingly ; fl. and fr. 

 beginning of Sept. 1857. No. 5359, partly. Stems tortuous, thick, 

 fistulose, 2 to 6 ft. high. At the river Bengo ; fl. and fr. Dec. 1857. 

 Coll. Cakp. 865. 



MosSAMEDEs. — An apparently perennial herb ; stem thick, fistulose, 

 3 to 7 ft. high, an inch thick, decumbent or nodding ; branches erect ; 

 flowers whitish rosy. In ponds or gently flowing pools at the banks 

 of the river Bero ; fl. and fr. July 1859. No. 5358. 



