106 
MERRILL. 
and tidal rivers; common throughout the littoral districts in the Philippines. 
Eastern Africa through India to Formosa, Malaya, and Polynesia. 
Dr. A. B. Rendle informs me that the type of Loureiro’s Derris trifoliata is 
not preserved in the British Museum; I consider the identity of this species 
and Derris uliginosa Roxb. to be unquestionable, and the earliest name is hence 
adopted. The next older name appears to be Dalhergia heterophylla Willd., and 
the type of this has been examined by Dr. H. Harms at my request, who reports- 
that it is quite the same as Derris uliginosa Roxb. 
The genus Derris was based by Loureiro on two species, D. pinnata, and D. 
trifoliata; the former is a Dalhergia, and is identical with D. tamarindifolia 
Roxb. (see p. 96). Under the circumstances it would be illogical to consider 
the first species described as the type of the genus, thus making Dalbergia and 
Derris synonymous, and hence the second species, Derris trifoliata Lour., must be 
adopted as the generic type. 
9. Derris micans Perk. Frag. FI. Philip. (1904) 82. 
Luzon, Province of Rizal, Merrill 2284, Bur. Sci. 4584 Ramos, For. Bur. 2802 
Ahern’s collector. 
Endemic. 
10. Derris mindorensis Perk. 1. c. 
Mindobo, Merrill 953. 
Endemic. 
Whether or not Derris micans and D. mindorensis are distinct is doubtful. The 
type of the former is a fruiting specimen, nearly glabrous in all parts, and 
that of the latter is a flowering specimen, the under surface of the leaflets and 
the inflorescence somewhat pubescent. The vegetative characters are very similar 
in both, and flowering specimens from near the type locality of D. micans (For. 
Bur. 2892 Ahern’s collector), have pubescent leaflets and panicles as in D. 
mindorensis. A larger series of specimens will be necessary to determine the 
exact relationships between the two forms. A cotype of D. mindorensis has 
been determined by Mr. Rolfe at Kew as D. ferruginea Benth., aijd it may be 
the same as the specimen collected by Vidal and so reported by Ceron. 51 
11. Derris lianoides Elmer Leaf!. Philip. Bot. 1 (1907) 228. 
Luzon, Province of Tayabas, Elmer 77/7/3, 9339, For. Bur. 10159 Curran: 
Province of Rizal, For. Bur. 2681 Ahern’s collector. Mindanao, Lake Lanao, 
Mrs. Clemens 537 and several sheets without number: Province of Misamis, 
Mount Malindang, For. Bur. 1/77 5 M earns cC- Hutchinson. 
This species belongs in the § Paraderris, and is apparently closely allied to 
D. montana Jungli., of Java, and to D. malaccensis Prain, of the Malay Peninsula. 
It differs from both in its smaller leaflets, and from the latter, at least, also 
in its narrower pods which are 5 to 8 cm long and 1.5 to 2 cm wide. 
12. Derris elliptica (Roxb.) Benth. in Journ. Linn. Soc. Bot. 4 (1860) Suppl. 
Ill; Baker in Hook. f. FI. Brit. Ind. 2 (1878) 243; F.-Vill. Nov. App. (1880) 
68; Prain ex King in Journ. As. Soc. Beng. 66 2 (1897) 106; Merr. in Philip. 
Journ. Sci. 1 (1906) Suppl. 66. 
Galedupa elliptica Roxb. Hort. Beng. (1814) 53, nomen, FI. Ind. 3 (1832) 242. 
Cylista piscatoria Blanco FI. Filip. (1837) 589. 
Galactia ? terminali flora Blanco 1. c. ed. 2 (1845) 411, ed. 3, 2: 390. 
Millettia splendens F.-Vill. Nov. App. (1880) 59. 
Cat. PI. Herb. (Manila) (1892) 66. 
