498 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Costa Rica: Nicoya, 1899, Tonduz 13614 (N). Ojo de Agua, Hoffmann 349 (G), 
San José, 1851, Oersted 107 (K). 
PanaMA: Between Aguadulce and Rio Chico, Coclé, altitude 20 meters, 1911, 
Pittier 5009 (N). Taboga Island, 1912, Celestino 41 (N). 
Cusa: Without definite locality, Drummond (K). Vicinity of Vento, Havana, 
1904, Wilson 1325 (N). 
Santo Dominao: Without definite locality, 1871, Wright, Parry & Brummel 
267 (N). 
Porto Rico: Near Coamo, 1885, Sintenis 3179 (N). Coamo Springs, 1899, Cook 
& Collins 707 (N); in 1901, Underwood & Griggs 509 (N). 
MonTSERRAT: Roadside near Grove, 1907, Shafer 129 (N). 
GuADELOUPE: Rather rare, Désirade, 1892 and 1894, Duss 2806 (N). 
MARTINIQUE: Scarce, Riviére-Salée, 1903, Duss 4682 (G, N). 
St. Vincent: Introduced and sparingly naturalized, H. H. & W. G. Smith 
1222 (K). 
VENEZUELA: Waste places (introduced), Agua Salud, Caracas, 1917, Pittier 
7435 (N). 
CuLTIvATED: Garden of Montpellier, Delile (K). Jardin des Plantes, Paris, 
October 19, 1839, J. Gay (K). Kew Gardens (type of Helianthus speciosus; 
K). Government House Grounds, Trinidad, 1907, Broadway 2880 (K). 
This species, whose natural range is the widest of any member of the genus, may 
be separated from 7. tubaeformis, its only near relative, by the merely canescent or 
pilosulous involucre and peduncles, the cuspidate-acuminate, not aristate pales, 
and the often three-lobed leaves. The types of T. aristata, T. heterophylla, and 
T. vilmoriniana have not been examined, but from description all clearly belong to 
T. rotundifolia. The type of T. aristata was collected by Oersted on Mount Aguacate, 
Costa Rica, and that of T. heterophylla by Duchassaing on Taboga Island, Panama. 
T. vilmoriniana was described from specimens grown in the Botanic Garden of 
Florence from seed received from Vilmorin-Andrieux, said to have been collected at 
‘‘Jacona, Mexico.’’ Miller’s type was grown at Chelsea Garden from seed sent from 
Veracruz by William Houstoun about 1730; Desfontaines’s from seed sent from the 
same locality by Thiéry in 1778. The species is well worthy of reintroduction into 
cultivation. Like its close relative T. tubaeformis, it is known in Mexico as ‘‘acaute.” 
Some of the second-growth heads of Donnell Smith’s no. 2385 show a curious condi- 
tion of the disk flowers. The apparently infertile ovaries are linear, 9 mm. long, 
and the awns are replaced by linear-spatulate, very unequal, flat, 1 to 3-nerved, 
pilose, upwardly subherbaceous appendages 0.8 to 7.5 mm. long, the longer more 
or less denticulate above; the squamellae are absent. The style branches are 5.3 
to 6 mm. long, including the lance-subulate attenuate appendage, which is 1.3 mm. 
long, and the anther appendages are lance-ovate, acuminate, 1.5 mm.long. The older 
heads in these specimens are normal. 
3. Tithonia brachypappa Robinson, Proc. Amer. Acad. 27: 174. 1892. 
Stem herbaceous, slender, striatulate, 2 to 3.3 meters high, sparsely hispid-pilcse or 
hispidulous with spreading, slightly tuberculate-based hairs, subglabrate; leaves alter- 
nate, the blades 3 to 6.7 cm. long, 1.6 to 4.7 cm. wide, ovate or triangular-ovate, unlobed 
or deeply three-lobed with attenuate lobes (the lateral ones sometimes again lobed at - 
base on outer side), cuneate or rounded-cuneate at base, dentate-serrate, hispidulous 
and rather densely gland-dotted on both sides, with stouter glandular-tuberculate- 
based hairs along the veins beneath, deep green above, slightly paler beneath; petioles 
hispid-pilose or hispidulous with tuberculate-based hairs, 1 to 5 cm. long, narrowly or 
rather broadly margined, at base dilated into serrulate or entire auricles decurrent on 
stem for 4.8 cm. or less; peduncles striate, fistulose, rather densely hispid-pilose or 
hispidulous, gland-dotted, 22 cm. long or less; heads 3.5 to 5 cm. wide; disk 1.4 to 1.7 
