Heterachena.] XX1t. COMPOSITE (OLIVER AND HIERN). 455 
113, HETERACH ENA, Fresen.; Benth. et Hook. f. Gen. 
Pl. ii. p. 526. 
Capitula homogamous, ligulate. Involucre cylindrical, at length 
thickened at the base; inner bracts narrow, elongated, equal, mem- 
branous; the outer ones few, small. Receptacle flat, naked. Ligule 
truncate, 5-dentate at the apex. Anthers sagittate at the base; 
auricles acute or shortly setaceous-acuminate. Style-branches slender. 
Outer achenes narrow, dorsally compressed, oo-costate, transversely 
rugulose, attenuate at the base, contracted at the apex into a very short 
; the inner achenes narrow, subterete, 4-5-costate, smooth. 
appus copiously setaceous, smooth, persistent or deciduous in one 
Plece-—An annual glabrous herb, dichotomously branched, with alter- 
nate leaves and blue flowers. 
A monotypic genus. 
1. H. massaviensis, Fresen. in Mus. Senckenb. iii. p. 74 (1839). 
A slender delicately branched annual 1-2 ft. high; branches terete 
glaucescent. Stem-leaves runcinate, more or less deeply pinnatifid or 
undivided, cordate, auriculate-amplexicaul, sessile, denticulate, often 
ciliately so, 15-44 in. long; radical leaves petiolate. Capitula nar- 
Towly oblong, +-4 in. long, 9-10-flowered, on slender pedicels of 
in., in a lax corymbosely paniculate cyme. Inner involucral bracts 
5, narrowly lanceolate, obtuse. Achenes }~} in. long.—Lactuca_mas- 
*avensis, Schultz Bip. in Herb. Schimp. Abyss. ii. n. 1046, iii. n. 1462; 
A. Rich. Fl, Abyss. i. p. 460; Sonchus massaviensis, Schultz Bip. in 
Schweinf. Beitr. Fl. ASthiop. p. 160; Brachyramphus lactucoides, T. 
ders. in Journ. Linn. Soc. Lond. Bot. v. Suppl. i. p. 23. 
. Mile Lana. Abyssinia, Schimper! Ehrenberg! Somali, Hildebrandt, fide Vatke 
m Oesterr. Bot. Zeitschr. 1875, p. 829. 
also in Arabia. 
114. REICHARDIA, Roth, Bot. Abh. p. 35 (1787); (Picridium, 
Desf. ; Benth. et Hook. f. Gen. Pl. ii. p. 527.) 
Capitula homogamous, ligulate. Involucre campanulate ; bracts 
'n any rows, imbricated ; the outer ones gradually shorter, broader, 
LaTlous-margined. Receptacle flat, naked. Ligule truncate, 5-den- 
~ at the apex. Anther-base sagittate ; auricles shortly setaceous- 
*cuminate, Style-branches slender. Achenes glabrous, oblong, 
Subterete, 4-5-costate, transversely rugose, slightly constricted but 
70t beaked at the apex. Pappus copiously setaceous, smooth, white, 
Sidious in one piece.—Erect glabrous herbs, with alternate or 
radical toothed or pinnatifid leaves, capitula on long peduncles, an 
Yellow flowers. 
A genus of a few species, chiefly inhabiting the Mediterranean region. 
1. R. tingitana, Roth Bot. Abh. p.35 (1787). Erect annual (at 
least as to bik apecinnea) 1-2 ft. high. Leaves oblong abiong-o 
°F lanceolate or the lower ones obovate, undivided or pinnatifid, 
