PHILIPPINE GYMNOSPERMS. 
173 
the stem, Oycas and the climbing stems of Menispermaceae among the 
Dicotyledons, where the growth of the original ring of bundles ceases 
after a time, and a second ring is formed in the cortex, which is simi- 
larly followed by a third, and so on.” 7 
A single genns, Gnetum, with about 20 species, in the tropics of both 
hemispheres. 
I can distinguish but four Philippine species, two trees and two 
climbing vines. The common one is Gnetum latifolium Bl. which is 
found throughout the Malay region and which is doubtfully distinct 
from G. scandens Eoxb. No authentic material of the latter species 
has been available to me, but the descriptions make the two species seem 
very much alike. 
KEY TO PHILIPPINE SPECIES OE GNETUM. 
a. Trees. 
b. Fruit sessile _ 1. G. gnemon 
bb. Fruit stalked 2. G. arboreum 
aa. Climbers. 
b. Large vine, twigs coarse, leaves, or some of them, acuminate at apex; 
staminate flower cluster more than 15 mm in length 3. G. latifolium 
bb. Slender vine, twigs fine, leaves not acuminate; staminate flower cluster not 
more than 15 mm in length 4. G. minus 
1. Gnetum gnemon L. Mant. 1 (1767) 125; Lam. Eneycl. Meth. Bot. 2 (1786) 
764; Willd., Sp. PI. 4 1 (1787) 591; Blume, Tijd. Nat. Gesch. 1 (1834) 160; 
Roxb. FI. Ind. 3 (1832) 518; Endl. Syn. Conif. (1847) 250; Blume, Rumpliia 
4 (1848) 3, t. 176, t. 178 B, f. 5; Miq. FI. Ind. Bat. 2 (1859) 1067; Pari, in 
DC. Prodr. 1 6 2 (1868) 349; Vidal, Phan. Cum. Philip. (1885) 160; Rev. 
PI. Vase. Filip. (1886) 295; Hook. f. FI. Brit. Ind. 5 (1890) 641; Ceron Cat. 
PI. Herb. (1892) 187; Karsten in Ann. Jard. Bot. Buitenz. 11 (1893) 203; 
Koorders, Meded. ’s Lands. Plant. 19 (1898) 265; Warburg, Monsunia 1 (1900.) 
195; Schumann & Lauterbaeh, FI. Deutsch. Schutzgeb. (1901) 156; Koorders 
& Valeton, Bijd. Ken. Boomsoort. Java 9 (1903) 349; Merr. in For. Bur. Bull. 
(Philip.) 1 (1903) 16; Bur. Govt. Lab. Publ. (Philip.) 27 (1905) 82; Philip. 
Journ. Sci. 1 (1906) Suppl. 24; Koorders-Schumacher, Syst. Verz. Herb. Koord. 
3 (1911) Gnetaeeae 1. 
G. sylvestris Brongniart in Duperrey Voy. Bot. (1828) 12. 
G. ovalifolium Poir. in Encycl. Suppl. 2 (1786) 810. 
G. brunonianum Griff, in Lindl. Vegetable Kingdom (1846) 233, f. 16 h; 
Notulae 4 (1854) 30; in Trans. Linn. Soc. Bot. 22 (1859) 308; Beccari, Malesia 
1 (1877) 183. 
G. griffithii Pari, in A.DC. Prodr. 16 - (1868) 349. 
G. gnemon sylvestris F.-Vill. Noviss. App. (1883) 210. 
G. gnemon laurinum F.-Vill. 1. c. 210. 
-s G. domestica mas Rumph. Herb. Amb. 1 (1750) 181-183. 
G. domestica femina Rumph. 1. c. 
G. silvestris Rumph. 1. c. 
Mail-Ombi Rheede, Hort. Malab. 5 (1685) 51, t. 26. 
Mala Elengi Rheede 1. c. 109, t. 55 ?. 
7 From Rendle, Classif. of Flowering Plants 1 (1904) 123. 
