— 8 — 



Hr.voptci'is (Lastraea) Itackcri. v, A. r. li. 



Stipites cum rachidibus primariis secundariisque pallide brun- 

 nei, supra pilis gracilibus, albidis, baud valde brevibus, pallidis 

 tecti, ceterum paleis squarrosis, deciduis, lineari-subulatis, angustiSj 

 pallide brunneis, graciliter et decidue ciliatis copiose v.estiti, 

 demum palearum basibus persistentibus asperuli. Frondes D. 

 setigerae similes, sed segmentis primariis secundariisque laxiori- 

 bus, tertiariis in sicco firmiter herbaceis, pinnatifldis, supra fere 

 glabris sed ad costas pubescentibus, subtus ad costas paleaceis et 

 ad venas pilosis, lobis triangulari-oblongis, parvis, costulis in 

 lobis pinnatis, venis simplicibus, liberis. Sori numerosi, parvi, 

 costis segmentorum tertiariorum approximati, in quoque lobo 

 1 — 2, indusiis minutissimis, membranaceis, albidis, inter sporangia 

 mox absconditis. 



Krakatau. — Mr. C. A. Backer discovered this plant in the 

 as new vegetation of said small volcanic island, which was 

 totally destroyed by an eruption in 1883. — I describe this 

 a new species with some hesitation seeing it is not probable 

 (however not impossible) that a new species should be found in 

 a new vegetation. It may be a hybrid between D. setigera, 

 O. Ktze and multiseta, G. Ghr. or even Phegopteris ornata, Fee. 

 It differs: a, from D. setigera in having the stipe and rachises 

 copiously provided with deciduous linear-subulate scales leaving 

 the stipe and rachises rough when they fall; ö, from D. multiseta 

 in having a line of hairs on the upper side of the stipe and 

 rachises and the scales deciduous, flat, not castaneous ; c, from 

 Phegopteris ornata in having the fronds much smaller, with the 

 rachises not winged and the sori minutely indusiate. 



IV1ESOCHLJEV4, ft. Hrown. 



fylesocliWena larutensis, v. A. v. It.: Nephrodium 

 larutense, Bedd., Handb. Ind. Ferns, Suppl., 73. 



Var. foorneensis: Upper surface of the pinnae naked 

 except on the costa; under surface copiously and minutely short- 

 hairy; indusium covered with minute, yellow, globose glands. 



Borneo (Hallier, No. 2704) 



