ACROSTICIIUM, § HETERONEURON. 259 



fronds firm-membranaceous a span to 1-2 feet long pinnate, 

 pinnie coninionly 3-5 rarely more ; sterile pinnee 3-5 inches 

 long H-2 inches wide subelliptical or oblongo-lanceolate, 

 lateral ones rather suddenly acuminate entire or sinuato- 

 crenate subcuneate at the base and petiolate, terminal one 

 similar to these but larger and more petiolate or more gene- 

 rally very much elongate and caudate a foot or 1^-2 feet 

 long ! rooting and proliferous at the apex, venation manifest, 

 costules rather wide apart, veins anastomosing always form- 

 ing a series of oblong large areoles close to the costa and 

 costules, nearly uniform in size and shape, the rest of the 

 areoles very irregular and with or without free included simple 

 veinlets ; fertile pinnae much smaller 2-3 inches long oljlong 

 obtuse ; occasionally the cauda of the terminal sterile pinnae 

 becomes fertile and the lateral sterile pinnae ])artially sorife- 

 rous, the capsules in that case chiefly confined to the costules 

 and near to the margin. — IVnll. Cat. w. 25. Huok.and Grev. 

 Ic. Fil. t. 23. Bl. Fil. Jav. p. 104. t. 13. Cyrtogonium, /. Sin. 

 A. heteroclitum, P/\ Poecilopteris, Pr. Heteroneuron, Fee, 

 Acrost. p. 92. Acrostichum diversifolium, Bl. Fil. Jav. p. 

 36. /. 12? [sterile frond simple!). Cyrtogonium, /. Sni. 

 Heteroneuron, Fee, Acrost. p. 91 [excl. syn. Gymnopteris 

 trilobata, /. Sni.). Poecilopteris, Pr. Rkeede, Hort. Malab. 

 xii. ^.11. 



Ilab. East Indies : Malabar, TZAeerfe; Nepal and thence through the eastern 

 provinces generally, IValUch, Griffith ; Chittagong, etc., Hooker fil. and Thomson ; 

 Mouhneine, Parish, n. 20. Java, Blume, in Herb, nosfr., Zollinger, n. 884. 

 Luzon, Cuming, n. 5 and 32. — A very polymorphous species, it must be confessed, 

 well represented by Blume and in the Ic. Fil. by Dr. Greville; but it is to be 

 regretted that neither represents the peculiarity of the venation. The species- 

 is remarkable for the generally small number and large size of the pinnic. 



127. A. (Heteroneuron) Quoyamim, Gaud.; caudex (creep- 

 ing?), stipites about a sjjan long, more of the sterile frond, 

 pubescent and as well as the rachis partially sul)ulato-squa- 

 mose ; sterile fronds 8-10 inches long firm-membranaceous 

 pinnate, pinnae petiolate 3-4 inches long 1-H inch wide 

 pubescenti-hirsute on the costae and costules beneatii, from a 

 truncated base broad-lanceolate deeply beyond the middle 

 pinnatifid, lowest pair dilated at the inferior margin (semi- 

 ovate and more deeply pinnatifid), the a])ex of the frond on 

 the ultimate ])inna also deei)ly pinnatifid at the base, seg- 

 ments oblong-ovate subfulcate entire or sinuato-dcntate rarely 

 (the longest of them) subpinnatifid, and the sinuses and 



