168 composite. [. HelicTirysum . 
Corolla and pappus of tbe last. G-naphalium cgespitosum, Lam . ; Gk 
foliosum, Loir. 
Mauritius, on exposed escarpments of the Pouce and Pieterboth. Endemic. 
Tetite Immortelle. 
10. SIEGESBECKIA, Linn. 
Flowers about a dozen in a head, all fertile, the outer obscurely 
ligulate, the inner funnel-shaped, all yellow and glandular. Involucre 
campanulate, biserial ; the inner scales obianceolate, obtuse, 5 outer 
twice as long, linear-clavate, densely gland-ciliated. Receptacle small, 
scaly. Anthers not tailed. Style-branches short, flat. Achenes obianceo- 
late, turgid, outer curved, externally glandular ; pappus none. — Herbs 
with opposite leaves and small heads in lax corymbs. Distbib. 
One other species, a native of Peru. 
1. S. orientalis, Linn. ; D.C. Prod. v. 495. An erect annual, 1-3 
feet high, with slender finely-downy branches. Leaves distant, 
opposite, deltoid, scarcely petioled, acute, membranous, irregularly 
toothed, 3-6 in. long, narrowed suddenly at the base into a long haft. 
Heads in lax terminal corymbs, on slender glandular pedicels. Inner 
scales of the involucre as long as the achenes, outer scales much 
longer than the rest of the head. Corolla yellow, very minute. 
Achenes -fc in. long, naked on the side towards the centre of the head. 
S. triangularis, Cav. and sp. 2 to 7, DC. Prod. loc. cit. 
Seychelles, Rodriguez, and Mauritius, a common weed. Everywhere within 
the tropics. Ilerbe de jlacq . Ilerbe grasse. 
11. SPILANTHES, Linn. 
Heads with numerous flowers, all fertile and hermaphrodite or the 
outer row female and ligulate. Involucre campanulate, of two rows 
of subequal herbaceous scales. Receptacle very prominent, covered 
with deciduous obtuse scales, which clasp the flowers. Anthers not 
tailed. Style-arms truncate. Achenes minute, those of the disk com- 
pressed, of the ray angular-cylindrical ; pappus in our plant none. 
— Annual or perennial herbs, with simple opposite leaves aud few 
small scattered heads. Distbib. Round the world in the tropics. 
Species 50. 
1. S. Acmella, Linn.; DC. Prod. v. 623. A perennial herb, with 
slender trailing finely pilose purplish stems 1-2 feet long with ass urgent 
branches. Leaves short-petioled, opposite, ovate, membranous, an 
inch long, obtusely toothed. Heads solitary, terminal or axillary, on 
peduncles which exceed the leaves. Involucre ^ in. long ; scales her- 
baceous, lanceolate, subobtuse. Flowers 50-100 in a hemispherical 
head ; ligules 5-10. Achenes in. long, glabrous, oblanceoJate-oblong ; 
pappus none. S. africana and caulirhiza, DC. loc. cit. S. mauritiana, 
DC. Prod. v. 625 (wrongly placed in § Salivaria). Acmella mauritiana, 
Pick. 
Mauritius, in damp grassy places on the slope of the Pouce, and at Curepipe, 
Yacquois, etc. Throughout the tropics of the Old World. j£cmelle. 
