PHILIPPINE GYMNOSPERMS. 173 
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tjie stem^ Cycas and the climbing stems of Menispermaceae among the 
Dicotyledons^ where the growth of the original ring of bundles ceases 
aftpr a time, and a second rinir is formed in the cortex, which is simi- 
larly followed by a thirds and so on." "^ 
A single genus, 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. Xo 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 OF GNETTJM. 
a. Trees. 
b. Fruit sessile - — -■- 1- ^^ gnenwn 
bb. Fruit stalked - ,- 2. 0. arboreum 
aa. Climbers. 
• b. Large vine, twigs coarse, leaves, or some of them, acuminate at apex; 
staminate flower cluster more than 15 ram in length .- 3. G. lattfohum 
bb. Slender vine, twigs fine, leaves not acuminate; staminate flower cluster not 
more than 15 mm in length - 4. G. minus 
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1. Gnetum gnemon L. Mant. 1 (1767) 125; Lam. Kncycl. Meth. Bot. 2 (1786) 
764; Willd., Sp. PL 4^ (1787) 591; Blume, Tijd. Nat. Gesch. 1 (1834) 160; 
Roxb. Fl. Ind. 3 (1832) 518; Endl. Syn. ConiL (1847) 250; Blume, Rumphia 
4 (1848) 3, L 176, t. 178 B, f. 5; Miq. FL Ind. Bat. 2 (1859) 1067; Pari, in 
DC. Prodr. 16^ (18G8) 349; Vidal, Phan. Cum. Philip. (1885) 160; Rev. 
PL Vase. Filip. (1886) 295; Hook. L Fl. 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, Mon.unia 1 (1900) 
"195; Schumann & Lauterbach, FL Dcutsch. 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; PhiUp. 
Journ. Sci. 1 (190G) Suppl. 24; Koorders-Schumacher, Syst. Verz. Herb. Koonl. 
3 (1911) Gnetaceae 1. 
0. sylvestris Brongniart in Duperrey Voy. Bot. (1828) 12. 
G. ovalifoUum Poir. in EncycL SuppL 2 (1786) 810. 
G. hrnnonianum Griff, in LindL Vegetable Kingdom (1846) 233, f.lH, 
Notulae 4 (1854) 30; in Trans. Linn. 8oc. Bot. 22 (1859) 308; Beccarx. M.Iesia 
1 (1877) 183. 
G. griifithii Pari, in A.DC. Prodr. 16= (1868) 349. 
G. gncmon sylvestris F.-Vill. Noviss. App. (1883) 210. 
G, gncmon Jaurinum F.-VilL 1. c. 210. 
G. iiomcsfica mas Rumph. Herb. Amh. 1 (1750) 181^183. 
G. do7nestica femina Rumph. 1. c. 
G. siJvestris Rumph. 1. c. . 
Mail-Omhi Rheode, Hort. Malab. 5 (1685) 51, t. 26. 
Mala Elcngi Rheede 1. c. 109, f. 55 ?. 
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'From Rondle, Classif. of Flowerins Plants 1 (1904) 123. 
