Dichrocephala| LXXI. COMPOSITA. 545 
Ambrosia, capitula heterogamous ; ali the flowers tubular ; those in the 
centre yellowish-green, male, 4- or 5-cleft at the apex, antheriferous, 
with the ovary usually but not always abortive ; the outer flowers 
whitish, very numerous, female, compressed-tubular, 2- or 3-cleft at 
the apex; achenes compressed, narrowly obovate, subtruncate, 
glabrous, surrounded with a whitish margin, their edges facing the 
centre of the capitulum (as with the carpels of Ranunculus) ; pappus 
in the female flowers consisting of very fine hyaline almost arachnoid 
hairs; in the male flowers pappus very rarely quite absent, but 
usually consisting of 2 or 3 to 5, rarely 6 or 7 arachnoid whitish 
flaccid almost pellucid threads reaching the middle of the corolla. In 
moist gravelly places between Sange and Undelle (N-delle), rather 
sparingly ; fl. and fr. June 1856. No. 3510. 
Bumso.—Flowers yellow-greenish. In moist shady situations in 
Serra da Xella, sporadic ; fl. Oct. 1859. No. 3511. 
13. GRANGEA Adans. ; Benth. & Hook. f. Gen. Pl. 1. p. 261. 
1. G. maderaspatana Poir. Encycl. Suppl. ii. p, 825 (1811); 
O. & H. in Oliv. Fl. Trop. Afr. iii. p. 304; Ficalho, Pl. Uteis, 
p. 209 (1884). 
Loanpa.—A bitter aromatic annual herb, much branched from the 
base, with the habit of a Cotula ; branches decumbent or ascending ; 
flowers in the living state bright-yellow, almost golden in colour ; 
achene prolonged into a little cup, on the margin of which is a pappus 
in the form of cilia. Weaker specimens with an erect stem and few 
(1 to 5) flower-heads occur but they quickly wither. Very abundant 
throughout the district about pools left after the spring and summer 
rains ; Museque de Luiz Gomes, de Schut, etc.; fl. and fr. May 1854, 
and from May to July 1858. Sometimes called Macella (Chamomile), 
but wrongly so. No. 3505. 
Ampaca.—A_ herb, apparently annual or biennial, with much- 
branched prostrate stems, and yellowish flowers. In damp bushy 
places on the left bank of the river Lucala, sporadic; fl. and fr. 
Oct. 1856. No. 3506. 
Forma egyptiaca DC. Prodr. v. p. 373 (1836) (sp.). 
MossaMEDES.—In moist sandy places in the public garden, sparingly; 
fl. July 1859. No. 3507. 
14. DETRIS Adans. Fam. Pl. ii. p. 131 (1763). 
Agatacha Cass. in Bull. Soc. Philom. p. 175 (1815). Agathea 
Cass. in Dict. Sc. Nat. i. Suppl. p. 77, t. 89 (1816). Felicia Cass. 
in Bull. Soc. Philom., 1818, Nov., p. 165; Benth. & Hook. f. Gen. 
Pl. ii. p. 274. 
1. D. ericifolia. 
Aster erice-folius Forsk, Fl. Aagypt.-Arab. pp. exix, 150 (1775). 
Athrixia ?ericefolia DC. Prodr. vi. p. 277 (1837). Felicia 
abyssinica Schultz Bip. in Herb, Schimp. Abyss. iii. n. 1763 ; 
O. & H. in Oliv. Fl. Trop. Afr. iii. p. 306. F. Schimpert Steud. & 
Hochst. ex Jaub. & Spach, Ill. Pl. Or. iv. p. 86, t. 354 (1852). 
Hvi_uia.—Flowers violet-coloured. In exposed parts of forests 
between Catumba and Ohai; fl. Dec. 1859 and April 1860. No. 3446. 
Flowers of a livid-violet colour. In the more elevated sparingly 
bushy pastures between Morro de Lopollo and Humpata; fl. April 
1860. No. 3447. 
