Ox7/gomim] civ. polygonace^. 903 



a double tetragonal pyramid, each pyramid being placed base to base 

 with reference to the other. In the poorer plots of cultivation and on 

 rubbish heaps, very plentiful, extending from Ambaca to the praesidium; 

 fl. and fr. Xov. and Dec. 1856. No. 1756. An annual, procumbent- 

 ascending herb, with white flowers and blue anthers. In cultivated 

 places and by roadsides ; fr. Feb. 1857. Coll. Carp. 864. 



3. 0. sinuatum Dammer, I.e. 



Ceratogonon sinuatum Hochst. & Steud. in Schimp. PI. Abyss. 

 Exsicc. i. n. 264 {U.i., 1840); Britten, I.e., partly. 



HuiLLA. — An annual, glaucescent herb, with white flowers. In 

 pastures among low bushes, flooded in the rainy season, near Lopollo, 

 rather rare ; fl. and young fr. Jan. 1860. No. 1758. 



Perhaps only a form of the previous species. 



4. 0. Acetosella Welw. in Trans. Linn. Soc. xxvii. p. 60 (1869) ; 

 Ficalho, PI. Uteis, p. 244 (1884). 



MossAMf:DES. — An annual, glabrous, somewhat fleshy, quite glaucous, 

 decumbent or prostrate herb, branched from the base ; stem semi- 

 cylindrical, the rachis of the flowering racemes acutely triquetrous ; 

 ochre^e truncate, quite entire or minutely erose-denticulate ; leaves 

 broadly lanceolate or ovate-lanceolate, gradually narrowed into the 

 winged petiole, repand-toothed or sinuate-dentate on the margin, 

 rather fleshy, very agreeably acidulous, when cooked rivalling those 

 of Rumcx Acetosella L. and providing a complete substitute for them ; 

 perianth deeply 5-cleft, corolline-whitish ; the segments obovate or 

 broadly elliptical, obtuse, apiculate, somewhat concave, patent, the 

 two outer ones with a green keel, stamens 8 ; filaments subulate ; 

 anthers didymous, versatile, pale blue ; style deeply trifid, white ; 

 stigmas capitate, yellow ; achene included in the tube of the perianth 

 and adhering to it, elongate-ovate, obsoletely and bluntly trigonous 

 when not quite ripe ; bracts 3- to 5-flowered ; racemes often H ft. 

 long. In sandy maritime hilly places from Mossamedes towards Cabo 

 Negro, especially near Praia da Amelia, plentiful ; fl. and young 

 fr. June and July 1859. Called " Azedas bravas " (wild sorrel). 

 No. 1757. 



2. POLYGONUM Tournef., L.; Benth. k Hook, f . Gen. PI. iii. p. 97. 



1. P. hemiarioides Delile, Fl. ^gypt. Illustr. p. 61 (1812). 

 Mossamedes. — An annual, prostrate herb, with the habit of P. 



(ivicidare L., and whitish-rosy flowers. In moist sandy places at the 

 river Bero ; fl. July 1859. No. 5372. 



HuiLLA. — In poor pastures flooded in summer, near Ohai ; fl. and 

 fr. April 1860. No. 5373. 



2. P. scabrum Poir. in Lam. Encycl. Meth. vi. p. 148 (1804). 

 P. salicifoliitm Broussonet ex Willd. Enum. Hort. Berol. p. 428 



(1809). P. serrulatum Lagasca, Gen. et Sp. PI. p. 14. n. 181 

 (1816). Persicaria serrulata Webb & Moq. in Webb & Berth. 

 Phyt. Canar. iii. p. 219 (1842-43?); J. A. Schmidt, Beitr. Fl. 

 Cap Yerd. Ins. p. 177 (1852). 



GoLUNGO Alto. — At the banks of the river Muria near Ponte de 

 Muria ; fl. and fr. Sept. and Oct. 1854. No. 5367. 



Mossamedes.— A perennial herb, 3 to 5 ft. high ; stem rooting, 

 ascending, quasi-scandent among Scirpoideae (cf. Scirpus maritimus 



