59 
(2) Frond at least four-pinnate. 
Pinnules 4-4 inch broad. 
11. A. gracillumum. 
2. Pinnules rhombic in shape (being 
obliquely wedge-shaped at the 
base). 
12, A. concinnum. 
(II) Fronds about as broad as long. 
13. A. collisit. 
(e) Pedatum Group.—Frond not pinnate- 
ly branched but dichotomously forked with 
numerous pinne springing from the upper side 
of each of the branches. 
14. A. hispidulum. 
1. Adiantum lunulatum Burm. 
Stipes 4-6 inches long, black to brown, wiry, 
polished. Fronds often rooting at the tip, 6-12 
inches long, 3 inches broad, pinnate, pinne 
distinctly stalked, half-moon shaped, #-14 inches 
broad, 4-1 inch deep, frequently lobed. Rachis 
on both surfaces naked. Texture herbaceous. 
