POLYPODIUM. 231 



forms : the barren ones, roundish or eUiptical, are of a dark green colour and 

 very conspicuously veined ; the fertile ones are longer, narrower, and strap- 

 shaped. Both kinds are of a leathery texture and quite naked on both sides. 

 The large spore masses are disposed in one series only. — Hooker, Species 

 Filicum, v., p. 35. Nicholson, Dictionary of Gardening, iii., p. 194. Lowe, 

 Ferns British and Exotic, i., t. 41a. 



P. (Goniophlebium) vacillans — Go-ni-oph-leb'-i-um ; vac-il'-lans 

 (wavering). A garden synonym of P. loriceum latipes. 



P. Yariataile — var-i-a'-bil-e (variable). A synonym of P. heteromorphum. 



P. Yeitchii — Veitch'-i-i (Veitch's), Baker. 



A greenhouse species, of small dimensions, native of Japan, with three- 

 or five-lobed fronds in shape of the Greek delta. A, and lin. to IJin. long. 

 These are produced from a slender, creeping rhizome clothed with pale brown 

 scales, and born on very slender stalks less than lin. long ; they are of 

 a somewhat thin texture, smooth, and of a pale green colour, and their oblong 

 segments, Jin. to Jin. broad, are blunt and minutely notched, the lowest side 

 ones reaching down nearly to the rachis. The sori (spore masses) are globose, 

 large for the size of the plant, and form a single row nearer the -midrib than 

 the edge. This species is allied to the Himalayan P. erythrocarpum. — Baker, 

 Gardeners' Chronicle, 1880, p. 494. 



P. (Phymatodes) venosum — Phy-mat-o'-des ; ve-no'-sum (veined). 

 A synonym of P. lycopodioides. 



P. venulosum — ve-nul-o'-sum (small-veined), Blume. 



This distinctly-pinnate, stove species, native of Malaysia, much resembles 

 the better-known P. pectinatum in habit. Its fronds, cut down to the rachis 

 throughout into close, horizontal leaflets, are 1ft. to IJft. long, lin. to IJin. 

 broad, and borne on tufted, rigid, wiry stalks lin. to Sin. long ; they are of 

 a somewhat leathery texture, dark green, and naked on both sides. The spore 

 masses are abundant and immersed. — Hooker, Sjjecies Filicum, iv., p. 223. 



P. Yenustum — ven-us'-tum (charming). This is a garden synonym 

 of P. himalayense. 



