MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 591 
4. L. SERRATUM, Thunb. Fl. Japon. 341, t. 38. Stems rigid, 3-10 in.; leaves 1-1 in., 
spathulate, oblong, subpetiolate, serrate.— Don, Prodr. Fl. Nep. 19; Wall. Cat. 118; 
Hk. & Grev. Ic. Fil. t. 37; Spring, Monogr. Lycopod. 39. L. javanicum, Swartz; ` 
Blume, Enum. Pl. Jav. Fil. 272; Swartz, Monogr. Lycopod. 40. L. sulcinervium, 
Spring, Monogr. Lycopod. 39. 
Nepaul to Bhotan; alt. 5000—10,000 feet, frequent. Khasia, alt. 4000-6000 feet, 
common.—Distrib. Malaya, Ceylon, Polynesia, Japan. 
5. L. sqUARROsUM, Forst. Prodr. Fl. Austral. 86. Stems usually 1-2 feet long, bearing 
sporanges only towards their extremities ; leaves 3-2 in., narrowly lanceolate-linear, 
acute, entire, rigid; upper leaves supporting the sporanges suddenly narrowed 
above the short ovate base into a linear subulate point, thus always more or less 
bracteiform.—Blume, Enum. Pl. Jav. Fil. 265; Hk. & Grev. in Hook. Bot. Misc. 
ii. 969; Spring, Monogr. Lycopod. 52; Seem. Fl. Viti. 328; Baker, Fl. Mauritius, 
519. L. wlicifolium, Ventenat ; Spring, Monogr. Lycopod. 50. ZL. Hookeri, Wall. 
Cat. 116; Hk. & Grev. Ic. Fil t. 185. L. epiceefolium, Desv.; Spring, Monogr. 
Lycopod. 51. ZL. protensum, Hk. & Grev.in Hook. Bot. Misc. iii. 106. L. verticil- 
latum, Willd.; Wall. Cat. 119; not of Linn. f. nor of Swartz. | 
. Sikkim and Bhotan, alt. 1000-5000 feet, frequent. Khasia, alt. 500-4000 feet, frequent. 
Chittagong Hills, Hook. f. & T. Thoms.—Distrib. South India, Ceylon, Malay Peninsula 
and Islands, Polynesia, Mauritius, Madagascar. 
.. The North-Indian plant is the typical L. ulicifolium, which has the leaves ascending, 
scarcely patent. L.squarrosum type has the leaves patent, squarrose. Large examples of 
L. setaceum and small examples of L. squarrosum are mounted together in the Kew Her- 
barium, and I can only separate them by the floral leaves of L. ulicifolium being more 
or less distinctly bracteiform. This distinction seems to fail us in L. proliferum, Blume, 
which is united by Baker with L. squarrosum. It seems midway between L. squarrosum 
and L. setaceum. On the other hand, my large L. squarrosum from Sikkim has the 
sporanges collected in dense short catkins, and might be equally well placed in the next 
series. 
** Sporangia collected in quasi-catkins, i.e. the sporange-supporting leaves are seoed 
packed in terminal oblong cones, and are dissimilar in Jorm to the sterile stem-leaves. 
See also L. squarrosum above. 
+ Sterile leaves of the stem quaquaversal, arranged spirally, — — 
6. L. cerxuum, Linn. Sp. Pl. 1566. Stem rigid, dendroid, 6-24 in., with the primary 
branches divaricate; leaves subulate, acute, not long hair-pointed ; catkins sessile, 
1-4 by Ae in. diam., ultimately pendent.—Roxb. in Cale. Journ. Nat. Hist. iv. 472; 
Wall. Cat. 130; Hk. & Grev. in Hook. Bot. Misc. ii. 369 ; Spring, Monogr. 
Lycopod. 79; K. Muell. in Bot. Zeit. 1861, 163; Seem. Fl. Viti. 328; Milde, Fil. 
. Europ. 255; Benth. PL Austral. vii. 676. Z. curvatum, Swartz; Spring, Monogr. 
. SECOND SERIES.—BOTANY, VOL. I. : 4L 
