Nesceea| LVII, LYTHRACEA. 375 
ones scarcely ,; in. long, erect-spreading, bibracteolate at the base ; 
calyx 8-striate, purplish, elongate campanulate, with 4 erect-connivent 
broadly deltoid apiculate lobes and 4 alternating longer cornua, which 
soon spread horizontally ; petals wanting or very rare; stamens 4; 
anthers yellow, didymous, rather large; ovary 2-celled ; placenta 
central, somewhat compressed ; style short, not exserted, rather thick, 
straight ; stigma capitate ; capsule globose, bursting in a circumsciss 
or irregular manner. On sandy clay by artificial ponds (Represas) near 
Conceig&o, sporadic; fl. and fr. July 1854. No. 2366. On the margin 
of the artificial pond at Museque de Luiz Gomes, not far from Loanda ; 
only one specimen, 2 in. high, seen ; in fl. bud Feb. 1858. Apparently 
belonging to this species. No. 2370. 
2. N. aspera Koehne in Engl. Bot. Jahrb. iii. p. 327 (1882), 
Ammannia aspera Guillem. & Perrott Fl. Senegamb. (i.) p. 304 
(1833); Hiern in Oliv. Fl. Trop. Afr. ii. p. 480. 
MossaMEDES.—Cymes trichotomous ; pedicels uni-bracteolate at the 
base ; calyx ebracteolate, membranous, greenish, afterwards rose- 
coloured ; petals wanting. In sandy-muddy marshes along the banks 
of the nearly dried-up river Bero, near Cavalheiros ; fr. and few fl. 
August 1859. No. 2361. An annual herb, a hand high, with several 
slender stems ; flowers rosy, trichotomously corymbose. At the sandy 
banks of the river Bero ; seeds July 1859. Couu. Carp. 581. 
3. N. andongensis Welw. ex Hiern in Oliv. Fl. Trop. Afr, ii, 
p. 473 ; Koehne in Engl. Bot. Jahrb. iii. p. 328 (1882). 
Punco ANDONGO.—An annual bright-green herb, with the habit 
of a Lythrum ; rhizome creeping ; stem reddish, tetragonal; leaves 
herbaceous, subglaucescent to deep-green ; calyx-lobes ciliate, patent 
at the time of flowering ; petals 4, or rarely 3 or 2, of a deep-rose or 
reddish colour, with a rather long claw; stamens 4, sub-exserted ; 
anthers yellow, with tumid almost globose-ovoid cells. In swampy 
stations near the cold springs on the higher parts of the gigantic 
volcanic rocks towards the eastern side of the presidium of Pungo 
Andongo; fl. and fr. March 1857. No. 2367. Anerect or ascending, 
deep-green, annual herb ; branches opposite ; leaves minutely crustaceo- 
serrulate ; flowers tetramerous, rosy; calyx urceolate-campanulate, 
8-striate ; lobes 4, broadly deltoid, acute, erect-connivent: cornua 4, 
longer than the calyx-lobes, erect-patent, at the apex ciliate with 
elongated rather rigid papille ; petals 4, obovate-spathulate, longer 
than the calyx, rosy, very fugacious ; capsule bursting irregularly. In 
marshy places with short herbage at the banks of the river Cuanza, 
near Sansamanda and Mopopo; fil. and fr. April 1857. No. 2368. 
4, N. sarcophylla Koehne, /.c., p. 328 (1882). 
Ammannia sarcophylla Welw. ex Hiern, l.c., p. 479. 
MossaMEvDEs.—A rather fleshy annual herb, branched from the base; 
stems thick ; branches prostrate or decumbent, here and there rooting 
at the nodes ; leaves rather rigid, glaucescent, ovate-lanceolate, cordate- 
auriculate at the base ; auricles rotundate-obtuse ; flowers sessile. In 
moist sandy places near the banks of the river Bero, near Cavalheiros, 
a few specimens ; in late fl. and fr. July and Sept. 1859. No. 2365. 
Cot, Carp. 578, 579 (part) and 580. Ina moist sandy spot near the 
river Bero then almost dried up, in company with Marsilea diffusa 
Lepricur ; only one specimen gathered ; fl. and fr. beginning of August 
1859. No. 2373. 
