Underwood : The genus Stenochlaena 41 



M 



i860. 



296. 



Acrostichum aculeatitm Racib. Pter. Fl. Buitenzorg 53. 1898. 



Icon. : Fee, loc. 



pL 14. 1893. 

 fenasserim, Jav 



Ann. Jard 



Usually appears in herbaria in a sterile condition. A van inermis 

 Mett., without spines on the rootstock, has also been described 

 (Mett. loc. cit. 297). 



6. Stenochlaena gracilis (Blume) Kunze, Bot. Zeitung 6 : 142. 



1848. 

 Lomaria gracilis Blume, Enum. PI. Jav. 205. 1828. 

 Acrostichum gracile Racib. Pter. Fl. Buitenzorg 53. 1898. 



Range : Java. 



7. Stenochlaena Williamsii sp. nov. 



Stems pink, 3-8 mm. thick, widely creeping, densely rooting 

 below, spiny above ; foliage leaves scattered, about 6 cm. apart, 

 up to 60 cm. long, the stalks pink with a slight tinge of brown, 

 slightly fibrillose, with a slight ridge and groove along the upper 

 side, pinnate ; the pinnae deciduous, stalked (5 mm. or more), 



lanceolate, 12-15 cm - l° n g> *-5 cm - wide, cuneate tapering at the 

 base, acuminate at the apex, the margin slightly repand or entire, 

 the surfaces smooth, the midrib prominent, reddish, with occasional 

 fibrils; veins distinct, close (about 15 spaces to 1 cm.), simple or 

 forked ; sporophyls pinnate, the pinnae deciduous, long-stalked 

 -10 mm.), 25-28 cm. long, 1.5-2 mm. wide, with conspicuous 

 midrib ; secondary foliage leaves 1—2 cm. long (or larger in young 

 plants), bipinnatifid, membranous, in growth appressed to the 

 substratum. 



Philippines : Lamao River, Mt. Mariveles, Prov. Bataan, 

 Central Luzon, alt. 1 20 meters, Williams 684.. Type in the her- 

 barium of the New York Botanical Garden. 



Growing on trees. " Young plants with finely dissected 

 leaves. " Unfortunately few of the secondary foliage leaves were 

 secured, so that their exact relation to the others is not clear in the 

 type specimen. The species differs from S. aculeata in its nar- 

 row pink pinnae, the color appearing in every part of the plant 

 when dry. From S. gracilis it differs in its cuneate acute bases 

 of the pinnae and the elongate pinnae of the sporophyls. 



