142 FLORA VITIENSIS. 
Linn. Syst. vol. ii. p. 564.—Nomen vernac. Vitiense, * Tumadu.?—Common throughout Viti (See- 
mann! n. 269). Also collected in Tana (Forster !). 
VII. Siegesbeckia, Linn. Hort. Cliff. 412; Endl. Gen. n. 2451. Capitulum ern: hete: 
rogamum, floribus radii l-seriatis, ligulatis v. difformibus foemineis, disci tubulosis, hermaphroditis. 
Involucri 2-seriati squame exteriores 5, lineari-spathulatze, patentes, pilis capitatis glandulosz, inte- 
riores achenia radii semi-involventes, erectze, dorso piloso-glandulose. Receptaculi plani pale: ovali- 
oblonge, achenia involventes. Antheræ ecaudate. Corolle radii ligulatz, ligula plana v. irregulari, 
2—8-dentata, disci tubulosz, 5-fide, 5-andre, v. 3-fide, 3-andre.  Achenia conformia, obovato- 
oblonga, subtetragona, introrsum subarcuata. Pappus nullus.—Herbe erecte, dichotom:e, superne 
glanduloso-pilose ; foliis oppositis, sepius in petiolum angustatis, ovato-triangularibus, grosse den- 
tatis, subvillosis v. pilosis, pedunculis ex alis ramorum 1-cephalis subcorymbosis, floribus luteis. 
1. S. orientalis, Linn. Sp. 1269; foliis ovatis basi cuneatis apice acuminatis grosse dentatis, 
summis oblongo-lanceolatis, involucri exter. squamis interiore duplo longioribus. Linn. Hort. 
Cliff. t. 23.— Common throughout Viti (Seemann! n. 263). Also collected in New Caledonia 
(M‘Gillivray!), Tana (Barclay !), Society Islands (Banks and Solander! Forster! Barclay !), and 
Marquesas group (Barclay !). Diffused over the East Indies, China, and Australia. 
VIII. Wollastonia, DC. ex Decaisne in Nouv. Ann. Mus. vol. iii. p. 414; Endl. Gen. n. 2502. 
Capitulum oo-florum, heterogamum, floribus radii 1-seriatis, ligulatis, femineis, disci tubulosis, her- 
maphroditis. Involueri 2—3-seriati squamze exteriores oblong:e, foliaceze, interne minores, membra- 
nacez. Receptaculum planum v. convexum, paleatam. Corolle supra ovarium articulate, radii 
ligulate, disci tubulosc, limbo 5-dentato. Stigmata disci cono superata. Achenia crassa, obovata, 
turbinata v. compressa, apice umbilicata. Pappus nullus v. aristeeformis, aristis 1 v. 5 tenuibus, rigi- 
dulis, deciduis.—Suffrutices v. rarius herbe, Wedelie facie, ssepius hispid; foliis oppositis, breviter 
petiolatis, ovatis, acutis, triplinerviis, dentatis, pedicellis ad apices ramorum sepius ternis 1-cephalis. 
1. W. strigulosa, DC. in Decaisne, Nouv. Ann. Mus. vol. iii. p. 414; foliis longe petiolatis 
3-nerviis aut prope basin 3-plinerviis ovatis acuminatis grosse serratis, supra sparse, subtus in nervis 
et petiolis striguloso-pubescentibus ; pedunculis ad apices ramorum 2-3 subalternis, involucro squa- 
mis 2-serialibus ovato-lanceolatis acuminatis dorso striatulis puberulis.— Verbesina strigulosa, Gaud. 
in Freyc. Voy. Bot. p. 463. Wedelia aristata, Less. in Linnea, 1831, p. 160. Buphthalmum helian- 
thoides, Forst. Prodr. n. 304, non L'Hérit. Nomen vernac. Vitiense, * Kovekove."—Common on 
all the seabeaches of the Vitian Islands (Seemann! n. 268). Also collected in New Caledonia 
(M*Gillivray ), Medioburg and other Polynesian Islands (Forster!), Tongan Islands (Sir E. 
Home !), Wallis Island (Sir E. Home !), Tana (Barclay !), and Eromanga (M‘Gillivray !). 
There must exist some confusion in A. Gray's herbarium, or else that excellent botanist eould not 
refer my n. 268, which is certainly identical with the authentic specimen of Forster's Buphthalmum helian- 
thoides, and hence with W . strigulosa, DC., to W. Forsteriana (Buphthalmum uniflorum, Forst. Prodr. 
n. 541; Weddelia Forsteriana, Endl. Fl. Norf. p. 51), of which authentic specimens exist at the British 
Museum. Of W. Forsteriana I have not seen any specimens from Viti, but as it is a common seabeach 
plant in Norfolk Island (Forster!), the Isle of Pines (Sir E. Home!), and New Caledonia (M‘Gillivray !), 
it may be expected to occur there. W. strigulosa is evidently a rather variable plant. 
. IX. Bidens, Linn. Gen. n. 932; Endl. Gen. n. 2541. Capitulum homogamum, discoideum, 
nunc heterogamum, floribus radii 1-seriatis, ligulatis, neutris, disci tubulosis, hermaphroditis. Invo- 
lucri 2-seriati squame exteriores interioribus conformes v. dissimiles. Receptaculum planiusculum, 
paleatum. Corolle radii ligulate, disci tubulosz, limbo 5-dentato. Stigmata cono brevi superata. 
Achenia plus minus obcompressa, aculeata, rostro ab achenio vix diverso superata, in aristas 2-5 re- 
