— 156 — 



Sumatra {Dell, Bandar-baroe,]. A. Lôrzing Nos. 4567, 4764. 30 December 

 1916—15 February 1917; Mt. Malintang, H. A. B Bunnenieijer No. 3881, 

 24 Juiy 1918). 



H u m a t a s q u a r r o s a, v. A. v. R. 



Euhumata. — H. vestitae Moore affinis sed in aspectu valde distincta. 

 Rhizoma longe repens, cretaceum; squamae squarrosae, subuiato-lanceolatae, 

 rufae, graciliter acuminatae, integerrimae vel parce minuteque ciliolatae, basi 

 peltatae. Stipites cum rachidibus glabri (glabrescentes?). Frondes ovato- 

 lanceolatae, acuminatae, copiose 2-pinnatae, basi sub-3-pinnatae. Pinnulae 

 numerosae, approximatae, aia angusta conjunctae; pinnulae superiores ob- 

 liquae, graciliter crenatae ad dentatae, basi oblique cuneata decurrentes; 

 pinnulae infimae horizontales, breviter peiiolulatae, basi truncata pinnatae, 

 segmentis parvis, graciliter crenulatis; venae venulis spuriis interpositis. 

 Sori perparvi; indusium transverse oblongum. 



H. vestita Moore differs in having the rhizome scales adpressed, brown 

 to black-brown, eroso-denticulate, the fronds less copiously 2-pinnate, 

 with the lower pinnulae more coarsely crenate, dentate or pinnate, the 

 veins not separated by spurious venules, and the sori somewhat larger. 



Sumatra {Bengkoelen, Seblat River, C. J. Brooks No. 460/S). 



Hymenophyllum Neesii (Bl.) Hk., Hk. Bk., Syn. Fil., 71; v. A. 

 v. R., Mal. Ferns, 81; Trichomanes Neesii, Bl., Fnum. PI. Jav., Il, 226; H. 

 denticulatum, Sw., C. Chr., Ind. Fil., 359, p. p. 



Lient. R. Maier's no. 484, from Lombok Island, differs from Van den 

 Bosch' diagnosis and plate (Leptocionium Neesii V. D. B). Hymen. Javan., 

 40, tab. XXX) in having the fronds to 8 cm. long, with the wings of the 

 stipes remotely serrulate-denticulate, the teeth of the wings of the rachises 

 and of the segments often narrower, more subulate, the indusia more 

 sparingly spinulose on the back or even nudate, the lower teeth of the 

 valves relatively short and broad (triangular), the higher relatively long 

 and narrow (subulate). 



Lecanopteris carnosa, Bl., Enum. PI. Jav.. Il, 120; v. A. v. R., 

 Bull. Btz., 1918, XXVIII, 29, tab. IX, fig. 5. 



Var. puni i la, v. A. v. R., 1. c; Plants recentiy received from 

 Sumatra {Mt. Malintang, H.. A. B. Bunnemeijer No. 3533) prove that 



L. saccata v. A. v. R. is very near this. The sor- 

 iferous outgrowths, when boiled up, however, 

 are incurved (not erected) with the mouth of 

 the soral cavities facing upward (not outward). 

 The texture differs from ourjavanese fragment 

 Fig. b. in being membranaceous, nolfirm-herbaceous. 



The soral cavities are about as deep as long. (Fig. b). 



