— 12 ~ 



Sori pauci, ad venas inferiores costulares; indusium tenue, demum irregul- 

 ariter cupuliforme. 



Sumatra (Bengkoelen, Lebong Simpang, C.J. Brooks No. 297/S). 



Cyathea moluccana, R, Br., Desv,, Prod., 322; v. A. V.R., Mai Ferns, 

 15; C. Brunonis, Wall., List, no. 179. 



The specimens of tiie Buitenzorg Herbarium, gathered in ßor/ieo, Lm^ig'a 

 and Sumatra and one in an unlcnown locality, have the rachis nai<ed and 

 smooth or more generally hirsute with deciduous hairs leaving the rachis 

 punctulate-asperulous on the upper side, the pinnae straight or falcate, 

 articulate to the rachis, papyraceous to subcoriaceous, entire, crenulate or 

 even slightly lobed, acuminate or caudate with the acumen serrulate-crenulate 

 to serrate, the main veins branched with 2 — 5 veins on a side, accompanied 

 by — 2 simple or forked intermedial veins proceeding from the costa in 

 the direction of the margin, between the main ones, the veins occasionally 

 anastomosing amongst themselves between the sori and the margin, the sori 

 large, sometimes small, irregularly arranged in 1 row or in 2 — 3 rows on 

 each side of the costa, approximate to it or not, the indusia with a persistent 

 base, sometimes deciduous. — 1 am unable to separate these forms because 

 of incomplete material. 1 do not consider them as distinct species and I 

 am inclined to consider as mere local derivatives the closely allied species 

 described by Copeland. 



Some of those species are apparently exindusiate and Copeland says 

 „Whoever is disposed to rename some of these species in Alsophila should 

 have difficulty in overlooking the fact that they are nearly related to Cjaf/zea 

 Brunonis .... etc." 



I have recently received from H. I. H. Prince Roland Bonaparte for 

 identification a fragment of a plant from Serawak {Kuching, Coll. No. 184, 

 April 1914). Judging from the diagnosis of C. fuscopaleata Cope/., the habitat 

 and collecting date of the quoted fragment, it belongs no doubt to C. iusco- 

 paleata Copel. — That species is described as having exindusiate sori, — which 

 may depend on how it is examined. 



When we look on the sori of the fragment quoted from above only, 

 they really seem to be exindusiate, even when the capsules are removed. 

 By a more exact examination from the side, however, by at least 25 times 

 magnifying power, we see that the receptacles are borne on truncate, 

 subconical elevations corresponding with distinct impressions on the upper 

 surface of the pinnae. These elevations are surrounded at the apex, 

 immediately under the receptacle, by a very narrow brown line which can 

 easily be removed in fragments with a fine needle without damaging the 

 epidermis of the elevations. This line or ring evidently belongs not to the 

 epidermis of the elevation, though it is more or less adpressed to the same; 



