6 



for cigars, and which so much care has been taken to artifically produce in the processes of curing and 

 manipulating. But as soon as the pest has once been thoroughly eradicated from the buildings, it 

 will probably be sufficient thereafter to carefully examine all later stock brought in, to see that the 

 beetle is not introduced again in any of its stages. If such is found infested, it must be at once sub- 

 jected to the steaming process. Either the steaming done in the preparation of cigarette tobacco is 

 not thorough enough, or else the tobacco is left exposed for a longer or shorter time after steaming, 

 and becomes re-infested before it is made up. In addition to the above, other precautions must be 

 taken. All cigars and cigarettes made up during the day, should be packed away, or closely covered 

 with flannel cloth. Refuse or dirt heaps should not be allowed to remain on the floors over night, and 

 the walls and floors should be kept clean. A careful observance of the above recommendations will 

 secure immunity from the pest. 

 Oct. 20 th, 1893. 



FERNS : SYNOPTICAL LIST.— XXIV. 



synoptical List, with descriptions of the Ferns and Fern- Allies of Jamaica, by G. S. Jenman, Superin- 

 tendent Botanical Gardens, Demerara, ( continued from, Bulletin No. 4^.) 



20. Asplenimn lunulatum, Swartz. — Stipites numerous, stiffly erect from an upright fibrous root- 

 stock, caespitose, 2 - 5 in. 1. light or dark brown, green margined ; rachis similar, not winged ; fronds 

 erect, pinnate, ^ - 1^ ft. 1. 1^ - 2 in. w. thin, naked, dark glossy green; pinnae very numerous, hori- 

 zontal, the lower pairs distant and little or not reduced and deflexed, upper approximate, passing, 

 gradually into the lobate- serrate acuminate apex, oblong f - 1 in. 1. 3 - 4 li. w. blunt and rounded, in- 

 ferior base cut away with a curve, the upper truncate, deep, and in the lower ones rather auricled, 

 evenly serrulate, teeth blunt, the inner double and outer single ; veins pinnate, ioner ones forked ; sori 

 very oblique, 1^ - 2^ li. 1. straight, near the mid- vein ; involucres narrow, pale, thin. — A. erectum, Bory. 



Var. A. strictum, Brack. — Fronds as large, pale green; pinnae uniformly pinnate, the segments 

 narrow, blunt, often rather falcate, 2^ li. 1. | li. w. with a space their own width between, a vein, 

 simple or forked, and a single sorus to each, the interior auricle generally uncut, cuneate flibellate 

 and deeply toothed. — A. rhizophyllum, Hook, and Grev. t. 193. A. dubium, Brack, A. erectum, var. 

 subbipinnatum, Hook. A. erectum, var. ninnati-partitum, Mett. 



Y ar. parvulum, Jenm. — Delicate, fronds 2-3 in 1. f in. br. stipites J-l| in. 1, pinnae 3-8 li. 1. 2 li. 

 w. sori ^ li. 1. 



Common in situations on the banks of spring sand streams and on rocks under shade from 3,000 to 

 5,000 ft. alt. The fronds are much longer than in Ifetum and the pinnae less cut away, while the stiffly 

 erect habit and uniformly round-ended pinnae mark it from pteropus and harpeodes. The var. A. 

 strictum at first sight might justly be regarded as perfectly distinct, but I have gathered fronds in the 

 upper parts of the forest streams of the Port Royal mountains, where both are common, exhibiting 

 every stage of the passage from one extreme to the other. The second variety was gathered on rocks 

 in the interior of Portland. 



21. A. harpeodes, Kunze — Rootstock stout, short, decumbent, densely clothed with fine attenua- 

 ated, dark scales in. 1. ; stipites caespitose, 2-4 in. 1. stiff, subterete, polished dark, brown or 

 blackish, naked; rachis similar, channelled, fragile, fronds pinnate, prostrate— spreading, very thin, 

 dark glossy green, naked, 1-2^ ft. 1. 2-4 in. w. reduced at the base ; pinnae very numerous, horizontal, 

 or decurved, the lower distant and flabellate, those above with usually half or quite their own width 

 between, 1^-3 in. 1. 4-6 li. w. shortly cut away in a curve on the inferior base, the upper base expanded, 

 truncate and deep, tapering thence outwards to the acute or acuminate or sometimes elongated and 

 attenuated point ; both margins evenly and deeply serrated with blunt or rounded teeth ^-f li. w. ; 

 veins pinnate, the interior flabellate, outer simple ; sori copious oblique, l-2f li. 1. near the distinct 

 mid-veins, distant from the margin ; involucres narrow, pale, straight, at length concealed. — Hook. 

 Sp. Fil. vol. 3, t. 178. 



Frequent in forests at the highest elevations on the ridges and peaks above 6,000 ft. alt. ; resem- 

 bling bissectum in habit of growth, but differing in texture, character of serratures and direction of the 

 venation and sori. The nature of the rootstock readily distinguishes it from pteropus and lunulatum. 

 In the larger fronds some of the pinnae become elongate-attenuate, extending to 3 - 4 in. in length, 

 the outer part being barren, while the rest of the pinnae remain normal. 



22. A. falcatum. Lam. — Rootstock shortly elongated, clothed with small dark reticulated scales ; 

 stipites tufted, ^ - 1^ ft. 1. strong, grayish or dark, channelled, puberulous; rachis similar; fronds 

 pinnate, f - 1^ ft. 1. ;| - f ft. w. the base truncate, the upper part passing gradually into the linear- 

 lanceolate, inciso- serrate, acuminate point, dark green and glossy, paler beneath, glabrous, stiff and 

 coriaceous ; pinnae several or many to a side, spreading obliquely or sub-horizontally, sub-distant, 3 - 

 6 in. 1. ^ - f in. w. acuminate or attenuate, the base stipitate, and obliquely cuneate, the lower ones, 

 which are the larger, expanded or auricled on the superior base, serrato-entire, or deeply and obliquely 

 incised and serrate with groups of sharp teeth which gradually become single in the attenuated outer 

 part , veins obscure, oblique, 2-3 times forked, midrib channelled above ; sori linear, ^ - 1 in. 1. at an 

 acute angle with the midrib, from which it extends to near the margin ; involucres firm, narrow entire. 

 A. erosum. Linn, (ex parte) Hook. Sp. Fil. vol. 3, t. 198. A. erosum, Mett. 



Common on steep stony forest ground and on shady banks and cliffs from the lower hills up to 

 4,000 ft. alt. ; very stiff and firm of substance, of a dark cloudy green colour, variable in size of fronds, 

 pinnae, degree of serration or incision, and length of the sori. The largest form, in which the pinnae 

 are long and attenuated, the margins deeply incised and eroded, and the sori from ^ - 1 in, 1. is found 

 in lowland woods ; the mountain form being much smaller, darker, the pinnae serrato-entire and not 

 attenuated. The sori in both form a single series, never duplicated ; nor is it ever diplazioid. I have 



