Polygonum^ civ. polygonace^. 905 



This plant was met with also in abundance by rather deep ponds at 

 Represa do Manuel Pereira van Hunnen in the district of Loanda ; it 

 flowers from December to March, and is perennial ; its hollow stem is 

 constricted at the nodes and remarkably moniliform, that is, the 

 joints are strongly inflated ; the stem is sometimes erect and 4 to 5 ft. 

 high, and sometimes decumbent and 6 to 12 ft. long by an inch in 

 diameter ; it is throughout of a pretty reddish colour. 



6. P. tomentosum Willd. Sp. PL ii. p. 447 (1799). 



Cf. Houttnyn, Handleid. viii. p. 467. t. 49. f. 1 (1777), under 

 P. ocreatuni. 



Ambaca. — An erect or ascending, cinereous herb, 2 to 3 ft. high, 

 with pallid rosy flowers. By streams, between Puri-Cacarambola and 

 N-gombe, in company with Rorippa Nasturtium Beck ; Oct. 185G, but 

 not then in good fl. No. 5361. 



PuNGO Andongo. — A marsh herb ; stems often elongated, a foot 

 long or more, simple, decumbent-ascending or almost floating, bearded 

 at the nodes with long root-like fibres ; flowers whitish-rosy. By 

 pools close to the banks of the river Luxillo, near the bridge, not 

 <jommon ; fl. Jan. 1857. A specimen, poorly represented in the British 

 Museum set, apparently of this species. No. 5360. 



See note under P. lanigerum R. Br. 



Var. limnogenes. 



P. limnogenes Vatke ex Engl. Hochgebirgsflora, p. 202 (1892). 



Leaves scabrid. 



HuiLLA. — An erect herb, 2\ to 4 ft. high ; ochrese ferruginous ; 

 spikes somewhat nodding ; flowers from whitish to slightly rosy. At 

 river banks near Humpata, in company with willows ; fl. and fr. April 

 1860. No. 5362. 



This is probably the Polygonum with which grew the grass Panicum 

 <Crus-pavonis Nees, Welw. herb. no. 7490 ; j^ost, ii. p. 173. 



3. RUMEX L. ; Benth. & Hook. f. Gen. PI. iii. p. 100. 



1. R. abyssinica Jacq. Hort. Vindob. iii. p. 48. t. 93 (1776) 

 <(ab7/ssinicus). 



PuNGO Andongo. — An erect, apparently perennial herb, 2 to 5 ft. 

 high ; leaves deltoid or lance-shaped, herbaceous-green above, glau- 

 cescent beneath, the radical ones with long petioles. In rich bushy 

 pastures in deep valleys among the gigantic volcanic rocks of Pungo 

 Andongo ; fl. and young fr. Dec. 1856 and Jan. 1857 ; also in rather 

 elevated rocky places by the streams of Catete and Cabondo in the 

 praesidium ; fl. and young fr. Feb. and April 1857. No. 5356. 



HuiLLA. — A branched herb, 2 to 4 f fc. high. By streams ; fl. and f r. 

 Dec. 1859. No. 5357- By rivulets near Lopollo ; fr. Jan. 1860. 

 €oLL. Carp. 878. 



This is the Rumex mentioned by Welw. in Journ. Linn. See. v. 

 p. 187 (1861). 



4. BRUNNICHIA Banks ; Benth. & Hook. f. Gen. PI. iii. p. 103 ; 

 X>ammer in Engl., Bot. Jahrb. xxvi. p. 347 (31 Jan. 1899). 



1. B. africana Welw. in Trans. Linn. Soc. xxvii. p. 61 (1869); 

 Oliv. in Hook. Ic. PI. xiv. p. 21, t. 1328 (Feb. 1881); Dammer, 

 I.e., p. 357. 



GOLUNGO Alto. — A slender, much-branched shrub, climbing high 



