Bichrocephala] lxxi. composite. 545 



Ambrosia, capitula heterogamous ; all 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-olef t at , 

 the apex ; achenes compressed, narrowly obovate, subtrunoate, 

 glabrous, surrounded with a whitish margin, their edges facing the 

 centre of the capitulum (as with the carpels of Ra7iuncului) ; 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. 



Bumbo. — Flowers yellow-greenish. In moist shady situations in 

 Serra da Xella, sporadic ; fl. Oct. 1859. No. 3511. 



13. GRANGEA Adans. ; Benth. & Hook. f. Gen. PI. ii. p. 261. 



1. G. maderaspatana Poir. Encycl. Suppl. ii. p. 825 (1811); 

 O. & H. in OUv. Fl. Trop. Afr. iii. p. 304 ; Ficalho, PI. Uteis, 

 p. 209 (1884). 



LoANDA. — 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. 



Ambaca. — 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 segyptiaea DC. Prodr. v. p. 373 (1836) (sp.). 



MosSAMBDES. — In moist sandy places in the public garden, sparingly; 

 fl. July 1859. No. 3507. 



14. DETRIS Adans. Earn. PI. ii. p. 131 (1763). 

 Aaatacha Cass, in Bull. Soc. Philom. p 175 (1815). Agathcea 

 Cass", in Diet. Sc. Nat. i. Suppl. p. 77, t. 89 (1816). Felicia Cass. 

 in Bull. Soc. Philom., 1818, Nov., p. 165 ; Benth. & Hook. f. Gen. 

 PI. ii. p. 274. 



1. D. ericifolia. 



Aster ericce-foUus Forsk. Fl. ^gypt.-Arab. pp. cxix, 150 (1775). 

 Athrixia ? ericcefolia DC. Prodr. vi. p. 277 (1837). Felicia 

 ahyssinica Schultz Bip. in Herb. Schimp. Abyss, iii. n. 1763 ; 

 0. & H. in Oliv. Fl. Trop. Afr. iii. p. 306. F. Sahimpen Steud. & 

 Hochst. ex Jaub. & Spach, 111. PI. Or. iv. p. 86, t. 354 (1852). 



HuiLLA. — 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. 



