.MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 573 
not obovate nor lobed at the summit, and by the sori more sunk in the substance of the 
frond. | 
3, A. RETICULATUM, Kaulf.; Fée, 9" Mém, Foug. 44. Stipe short or 0; frond linear or 
linear-lanceolate, 38-10 by i-1i in., not plicate; sori immersed.— Wall. Cat. 40; 
Hook. Sp. Fil. v. 169; Bedd. Ferns South. Ind. t. 231; Hk. & Baker, Syn. Fil. 393; 
Benth. Fl, Austral. vii. 777, in part. .4. falcatum, Blume, Fl. Jav. Fil. 76, t. 32. 
Hemionitis reticulata, Forst. Prodr. 79. 
= Sikkim, Dr. Jerdon.—Distrib. Ceylon, Malacca, Polynesia, Queensland. 
There is only one North-Indian specimen now left in the Kew bundle, and that I 
suspect is our common A. coriaceum, dried under much pressure by Dr, Jerdon, so as 
to show the plication less than usual. Wallich’s A. reticulatum is very large, 3-4 in. 
broad.— Fée says his 4. reticulatum has a long stipe, and quotes as a picture Blume's 
Fl. Jav, Fil. t. 32, which shows the fronds attenuate to the rhizome. 
Var. parvula, Fronds 1-4 by 4-4 in., sides very parallel; sori appearing as though 
forming parallel lines the whole length of the frond, but really reticulating. 
~ Sikkim, W. S. Atkinson; Yoksun, alt. 4500 feet, C. B. Clarke.—l know no reason 
why this should not really be the same as 4. parvulum, Blume, Fl. Jav. Fil. 78, t. 34. 
fig. 3. That figure represents the fronds as being rather larger, with less parallel sides, 
the sori in less continuous lines. 
4. A. LATIFOLIUM, Blume, Fl. Jav. Fil. 75. Stipe long; frond large, broadly obovate, 
often acuminate or acutely lobed at the apex ; sori superficial, ultimately elevated 
beneath.—Fée, 3™ Mém. Foug. 48; Hook. Sp. Fil. v. 172; Bedd. Ferns Brit. Ind. 
t. 176; Hk. & Baker, Syn, Fil 394. A. Boryanum, Blume, Fl. Jav. Fil. 75, 
t. 31, not of Hk. & Grey. Hemionitis Boryana, Blume, Enum. Pl. Jav. Fil. 111, 
syn, excl. 
Sikkim and Bhotan, alt. 2000-6000 feet, frequent. Assam and Khasia, alt. 1000- 
4000 feet, frequent.—Distrib. Java. 
My large Sikkim examples are 15 by A8 in., the anterior margin acutely lobed, and 
are easily called A. Jatifolivm. But my smallest Sikkim examples are 32 by 4 in.; and, 
except that they are obovate, often lobed or notched at the vertex, I do not rom how 
they are to be separated from .4. plantagineum: I see no tangible difference in the 
elevation of the sori beneath. 
38. VITTARIA, Smith. 
LV. ELONGATA, Swartz, Syn. Fil. 109, 302. Rhizome somewhat long; scales many, 
with long, very black hair-like points; fronds 4-26 by i-i = midrib cma 
beneath, even in the upper half of the frond; outer lip of the involucre not tin- 
. guishable from the margin of the frond; sori ultimately elevated.— Wall. Cat, 144; 
— Fée, 3™ Mém. Foug. 22, t. 3. fig. 5; Bedd. Ferns South. Ind. t. 21; Hk. & Baker, 
‘Syn. Fil. 395; Luerssen, Fil. Graeff. 90, cum syn. V. rigida, Kaulf.; Wall. Cat. 
