1913] CHRISTENSEN—FILICES PURDOMIANAE 337 
GYMNOPTERIS BIPINNATA Christ in Lecomte, Not. Syst. 1:55. 
1909.—Gymnogramme Delavayi Christ, Nuov. Giorn. Bot. Ital. 
N.S. 4:17. pl. 3. fig. 3 (non BAKeR).—Tai-pei-shan, no. 28. 
Matteuccia intermedia, sp. nov.—Species critica inter M. 
struthiopteridem et M. orientalem medium tenens, a priore quae 
habitu magnitudine similis, differt: paleis basalibus nigris, rachibus 
paleaceis, lamina longe stipitatis, versus basin breviter decrescente, 
pinnis lobatis nec profunde pinnatifidis, venis tertiariis circiter 
5-Jugis, pinnis fertilibus 6-7 cm. longis, 3-4 mm. latis recurvatis; 
a posteriore, quae venatione, colore, rachi paleacea similis, differt; 
pinnis angustioribus, inferioribus 2—3-jugis abbreviatis. 
A most critical form, intermediate between M. struthiopteris (L.) Tod. 
and M. orientalis (Hook.) Trev. The sterile leaf resembles M. struthiopteris 
in size and in breadth of pinnae; it differs in (1) the long stipe, which is up to 
20 cm. long, o. 5 cm. or more thick, broadly furrowed above, in the lower part 
and especially at base clothed with large (2 cm. long by 0. 5 cm. wide), nearly 
black, glossy, and entire scales; (2) the lamina being very shortly attenuate 
downwards, the lower 2 pairs of pinnae only being somewhat abbreviated; 
(3) the rachis, like the costae of the pinnae beneath, clothed with l 
blackish scales; (4) the pinnae, which are not very close, linear, 10-12 cm. 
long by 1.5 cm. broad, incised not more than a third of the way down to the 
midrib into broad, obtuse lobes; basal lobes scarcely prolonged, but the lower 
one considerably broader and imbricating the upper side of the rachis, under 
surface pale, glandular with scattered yellowish glands; (5) the venation, the 
tertiary veins being very oblique, about 5 to a side, the lower ones curve 
upward and running to the sinus. M. orientalis has much broader and more 
deeply cut pinnae, the basal ones not at all abbreviated. Fertile leaf with stipe 
and rachis rather scaly beneath with light-brown, crisped scales; ~— 
30 cm. long, lamina 40-50 cm. long, about 10 cm. broad; lower pinnae a little 
Shortened, median ones 6-7 cm. long, 3-4 mm. broad, at first erect, later 
recurved from the erect base with hanging tips; costae scaly beneath, the veins 
distinctly seen on the upper side. Indusium apparently wanting. 
As a whole, our new species is perhaps nearest to M. orientalis, resembling 
it in color, the scaly rachis, and especially in the large fertile leaves, but in 
general habit it is much more like M. struthiopteris. It is possible that Stru- 
thiopteris orientalis var. brevis Christ, Bull. Soc. Bot. France, Mém. 1:44, 
from Szechuan and Hupeh, is just our species. Shensi: Tai-pei-shan, Purpo 
nos. 1, 8, 9, 12.—Recently I have received from Professor BOWER, of Glasgow, 
a very ers exindusiate form from Darjeeling, Sikkim, British Himalaya, 
leg. W. Cav 



See CLATHRATUM Clarke in Trans. Linn. Soc. I. 
Bot. 1:559. pl. 82. fig. 1. 1880.—Tai-pei-shan, no. 96. 
