20. LINDSAYA, ISOLOMA. 109 



resembling L. pendula in its subsecund fertile pinnules, but with the ultimate divisions 

 so narrow, that the sorus is usually as deep as broad ; so that we place the plant here 

 rather from analogy than because it fulfils the technical character of the genus. 



25. L. ? Parishii, Baker ; rhizome slender, wiry, wide-creeping ; fr. 1 ft. 1., 3-4~ 

 in. br., tripinnatifid, the rachis flexuose, and rooting at its extremity ; pinnae 

 15 to 20 on each side, 1-2 in. 1., flexuose, spreading from the stem at about a 

 right angle ; pinnl. oblong, blunt, the largest about 4 lin. 1., 2 lin* br., cut down 

 to a narrow flattened rachis into 3 or 4 segm. on each side, which are rather 

 broader at the point than below, placed only on the lower side of the main rachis 

 of the pinnae, except one at its base, and often, but not always, a few towards its 

 extremity ; texture herbaceous ; fruit unknown. 



Hab. Banks of Packchang river, the southern boundary of the province of Tenasserim, 

 Rev. C. S. Parish. The fruit is quite unknown, but I was unwilling to leave this very 

 curious fern unnoticed. In habit it comes nearest L. Sprucei ; but the pinnules here are 

 larger and different in texture, and confined principally to the under side of the rachis. 

 The general aspect is very like that of a large leaf of a bipinnate Acacia, but with 

 compound and subsecund leaflets. 



Isoloma, J. Smith. Pinnce equilateral ; veins free. Sp. 26-35. This section 

 in habit and texture resembles Pteris rather than Adiantum, and the cuneate species 

 approximate very closely to Stenoloma. 



* Fronds simple. Sp. 26-27. 



26. L. (Iso.) reniformis, Dry. ; st. wiry, flexuose, 4-6 in. 1., black, polished ; 

 fr. 2-2?r in. across, orbicular-reniform, with a deep basal sinus ; texture coriaceo- 

 membranaceous, not pellucid ; sori continuous all round the edge, except in the 

 sinus. Hk. Sp. 1. p. 203. 



Hab. Guiana and the Amazon valley. 



Hab. Guadeloupe and French Guiana. 



** Fronds simply pinnate, with linear pinnae. Sp. 28-30. 



28. L. (Iso.) Walkerce, Hk. ; rhizome creeping, paleaceous ; st. wiry, erect, 

 black, polished, 6-12 in. 1. ;fr. 6-12 in. 1., 2-4 in. br., simply pinnate ; pinnce l|-2 

 in. L, ^ in. br., entire, equilateral, erecto-patent, with several times their breadth 

 between them ; texture coriaceous ; rachis naked, shining, brownish-black ; sori 

 in a continuous line along both edges Hk. Sp. 1. p. 209. t. 69. A. 



Hab. Ceylon and island of Banca, east of Sumatra. 



29. L. (Iso.) divergens, Wall. ; rhizome creeping, wiry, fibrillose ; st. wiry, erect, 

 black, polished, 4-6 in. 1. ; fr. 6-12 in. L, 1^-2 in. br., simply pinnate ; pinnce j-1 

 in. 1,, 2-3 lin. br., obliquely truncate at the base below, auricled at the base above, 

 the margin entire, the point bluntish ; texture coriaceous ; rachis naked and 

 polished ; sori in a continuous line along both edges. Hk. Sp. 1. p. 210. Hk. 

 & Gr. Ic. t. 226. 



Hab. Malayan Peninsula and Borneo. Here the pinnae are placed close together, and 

 spread from the rachis at a right angle. 



30. L. (Iso.) lanuginosa, Wall. ; rhizome stout, creeping, clothed with fibrillose 



