208 
206. 
8. Coste beneath setose by simple hairs. 
156 
262. D. tetragona (Sw.) Urban. 
5. Under surface with minute stellate hairs throughout, 
especially on coste and costules, but also on the leaf-tissue. 
6. Terminal pinna stalked, distinct. Pinnz incised !/s or 
deeper; as a rule the lowermost pair of veins only are 
anastomosing under a broad angle. 
269. D. megalodus (Schkuhr) Urb. 
6. Terminal pinnz: confluent with the upper lateral ones, 
which are adnate to rachis. Pinne broadly serrulate 
(lobes scarcely longer than broad). 2—3 pairs of al- 
ternately united veins...... 264. D. leucophlebia (Christ) C. Chr. 
Microdictyon. 3—10 pairs of meniscioid veins. Pinn: entire 
or crenate, seldom shallowly lobed, mostly more than 4 em 
broad. 
4. Lamina beneath more os less soft-hairy. 
5. Veins 6—8-jugate, the 3—4 lower pairs meniscioid. Spo- 
rangia when young setose......... 265. D. Poiteana (Bory) Urban. 
5. Veins 10—12-jugate, 8—10 pairs meniscioid. Sporangia 
glabrous. Lamina densely soft-hairy. 
267. D. Ghiesbreghtii (Lind.) C. Chr. 
Lamina glabrous. Meniscioid veins several. 
5. Pinnez narrowed from the middle to base, crenate or 
serrulate 5-00. 0310002820260: D: "menisctoides-(L1ebmi) C Gh: 
5. Base of pinne subcordate. Pinnz entire.. 268. D. ensiformis n. sp. 
Pinne with an acute or obtuse aérophore at the base beneath. 
Stellate hairs none. Several pairs of veins connivent to a cartila- 
gineous membrane below the sinus, the opposite pairs not anasto- 
mosing, but two subsequent veins of the same side of the costule 
generally united near the membrane; see D. glandulosa and D. Fend- 
leri under § Steiropteris. 
1 Asterochlaena C. Chr. 
Biolog. Arbejder tilegnede Eug. Warming 84. 1911. 
Syn. Aspidium Cumingianum Kze. Farrnkr. 1: 17 tab. 9 fig. 2. 1840. 
Dryopteris Cumingiana (Kze.) O. Ktze. Rev. 2: 812, 1891 C. Chr. Ind. 260. 
Nephrodium Cumingianum J. Sm. Bot. Voy. Heral 237 tab. 50. 1854. 
Type from Panama, leg. CuuriNG nr. 1123 (Kew! a small leaf only). 
Apparently a very distinct species, well figured on the plates quoted, still it 
is possible that it and the following species are forms of one species. D. Cumingi- 
ana is less hairy, the lamina faintly crenate and 1—2 veins generally joint alter- 
nately the excurrent branch from the united basal veins. It appears to be a rare 
species, which is not found in the large recent collections from Panama. 
