122 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
plane, densely pubescent on the inner side, glabrous without, the anthers densely 
pilose on the margins; ovary densely pilose, the style glabrous, slightly longer than 
the stamens. 
Type in the U. S. National Herbarium, no. 679343, collected in forests on Loma 
de la Gloria, near Faté, Province of Colé6n, Panama, altitude 10 to 104 meters, August, 
1911, by H. Pittier (no. 4242). 
Among the species treated in the monograph previously mentioned this appears to 
be nearest S. bogotensis Perkins, described from the vicinity of Bogota, Colombia. 
That species, however, has much smaller leaves (7 to 12 cm. long), shorter pedicels 
(2 to 3 mm.), and paniculate inflorescence. 
Mr. Pittier collected another species of the genus, Styrax argenteus Presl, in the 
vicinity of Ol4, Province of Coclé, Panama, early in December, 1911 (no. 5076). 
Miss Perkins in 1902 described another species, S. warscewiczii,! from Veraguas, 
Panama, the type being Warscewicz’s no. 203. 
TARDAVEL A VALID GENERIC NAME TO REPLACE BORRERIA. 
It is evident that the name Borreria Meyer can not be applied to 
a genus of Rubiaceae, since it had been used previously by Acharius 
to designate a group of lichens, as stated by Meyer ? when he dedicated 
the second genus to the lichenologist Borrer. The name Diodioides 
is the first synonym of Borreria cited by Dalla Torre and Harms. 
This, however, was merely cited by Loefling‘ as a synonym, so is a 
nomen nudum. ‘Tardavel was published by Adanson ° in 1763. No 
specific name is cited, but there is a reference to plate 76 of Rheede’s 
Hortus Indicus Malabaricus. This plate had been cited by Linneus 
in the second edition of the Species Plantarum * under Spermacoce 
hispida. That plant thus becomes the type of the genus Tardavel. 
The generic name was taken up in 1898 by Hiern,’ who transferred a 
number of species of Borreria to Tardavel.. 
The genus is a large one, numerous species occurring in tropical 
America. Only five, Tardavel ocymoides (Burm.) Hiern, and the 
following, have so far been found in Panama: 
Tardavel laevis (Lam.) Standley. 
Spermacoce laevis Lam. Tabl. Encycl. 1: 273. 1791. 
Borreria laevis Griseb. Abh. Ges. Wiss. Gittingen 7: 231, 1857. 
Tardavel latifolia (Aubl.) Standley. 
Spermacoce latifolia Aubl. Pl. Guian, 1: pl. 19. f. f. 1775. 
Borreria latifolia Schum, in Mart. Fl. Bras. 6°: 61, 1888. 
Tardavel spinosa (I..) Standley. 
Spermacoce spinosa L. Sp. Pl. ed. 2. 148. 1762. 
Borreria spinosa Schlecht. & Cham. Linnaea 8: 340. 1825, 
Tardavel tenella (H. B. K.) Standley. 
Spermacoce tenella H. B. K. Nov. Gen. & Sp. 3: 270. 1818. 
Borreria tenella Schlecht. & Cham. Linnaea 8: 317. 1828. 
1 Bot. Jahrb. Engler 31: 480. 5 Fam. Pl. 145. 1763. 
? Prim. Fl. Esseq. 79. 1818. 6 Page 149. 
3 Gen. Siph. 506. 1900-1907. 7 Cat. Pl. Welw. 2: 503. 
‘Iter Hisp. 201. 1759. 
