Oxyyomon] civ. roiA'CJuNACK-E. 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 

 rubbisli heaps, very plentiful, extendins; from Ambaca to the pnosidium ; 

 tl. and fr. Nov. and Dec. IH.'itl. No. 1756- An annual, procumbent- 

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

 places and by roadsides ; fr. Feb. 1857. Coll. Cak!>. 8G4. 



3. 0. sinuatum Dammer, I.e. 



('erato(i<)iio/i siinifitxia Ilocbst. <fe Steud. in Scliinip. PI. Aby.ss. 

 Exsicc. i." 11. lM3l {r.i., IMO) ; Britten, I.e., \Mn-t\y. 



HriLLA.— An annual, glaucescont herb, with white flowers. In 

 pastures among low bushe-!, flooded in the rainy season, near Lopollo, 

 rather rare : fl. and young fr. Jan. 1800. No. 1758. 



Perhaps only a form of the previous species. 



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

 Ficalho, PI. Uteis, p. 2U (1884). 



Moss.vMKDi'.s. — An annual, glabrous, somewhat fleshy, ([uite glaucous, 

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

 cylindrical, the rachis of the flowering racemes acutely triquetrous ; 

 ochrea) 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 liuinix Acddt^ella L. and providing a complete substitute for them ; 

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

 broadly ellipticjil, 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 

 wlien not quite ripe ; bracts 3- to 5-flowered ; racemes often li 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 1869. Called " Azedas bravas " (wild sorrel). 

 No. 1757. 



•1. POLYGONUM Tournef., L.; Benth. cfc Hook, f . Gen. PI. iii. p. 97. 



1. P. hemiarioides Delile, Fl. .'Egypt. Illustr. p. 61 (1812). 

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



(ivicuhire L., and whitish-rosv flowers. In moist sandy places at the 

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



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

 fr. April 1800. No. 5373. 



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

 F. scdicifolium Broussonet ex Willd. Enum. Hort. Berol. p. 428 



(1809). P. serrulatum Lagasca, Gen. at 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 Verd. Ins. p. 177 (1852). 



G()LUN(!() Alto. — At the banks of the river Muria near Ponte de 

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



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

 ascending, quasi-scandent among Scirpoideae (of. Scirpus inarit/inus 



