Descriptions of the Species. 
193 
South Asia, North Australia, Tropical South Africa, and 
Mauritius. 
Natal. — Coast to 1000 feet, Banks of Umhloti near Todd’s Mine, and of 
the Impisi near Tugela (Buchanan), Umgeni Brickfields (Wood), 
(Herb. Barkl. 114, Herb. Bolus, 3979). 
1 1 6. Polypodium unitum. Hk. 
Plate CIX. Natural size. 
Crown procumbent or sub-erect. Fronds thinly sub-coriaceous, 
semi-transparent, glabrous or minutely villose, often proliferous, 
simply pinnate, widely lanceolate, two to four feet long, one to two 
feet broad at the middle, less below, and with a naked, channelled, 
herbaceous stipe, one foot or more long. Pinnae sessile, lanceo- 
late, acuminate, from a rounded base, six to twelve inches long, 
one inch broad, and cut one to three lines deep into obtuse, 
rounded, oblique, entire, or slightly crenate lobes. Veins con- 
spicuous, five to six pairs of veinlets meeting below the sinus. 
Sori small or rather irregular, situated on the veinlets close to the 
mid-rib of the lobes. 
P. unitum. Hk. Sp. V. 5 ; Hk. and Bkr. Syn. Fil. 317 ; Wood’s Natal 
Ferns, 31 ; Buchanan’s List, 97. 
Phegopteris unita. Mett.; Kuhn, Fil. Afr. 124. 
Gymnogramme unita. Kze., Linnsea, 18.115. 
Goniopteris sylvatica. Pappe and Rawson, 39. 
Natal and Cameroons only, growing in shady ravines. 
Natal. — (Gueinzius, Bolus, 3980), abounds from Inanda inland (Wood) ; 
common at Umpumulo, 2000 to 3000 feet (Buchanan), Maritzburg, 
Great Noodsberg, Fort Buckingham (M‘Ken). 
1 1 7. Polypodium vulgare. Linn. 
Plate CX. Natural size. 
Rhizome three to twelve inches long, two to four lines diameter, 
branched, and clothed with light yellow somewhat deciduous 
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