NEW HEPATICLE. 409 



via, margine dentato-spinosa ; perigoniis alter natim seriatis, 

 supra nervum confertis ; calyptris epiphyllis, elongate obo- 

 vatis, apice pistilliferis, basi squama laciniato-dentata 

 tectis. 

 Hab. On Casapi. Matheivs. Hook. Herb. 



About an incb long, very pale olive-green. Fronds creep- 

 ing, the young and barren often acute. Young fronds issue 

 as stipitate buds from the extremity of the nerves of the 

 aged. Capsule linear, splitting into four or more valves, 

 united at their tops. Seeds about four times the diameter of 

 the elateres. Perigonia are scales similar to those at the base 

 of the calyptra, but more concave, each containing a single 

 anther. Differs from S. Harveyana, Tayl. by the creeping 

 fronds, which are less divided, and by the spinous teeth of 

 their margins. 



3. S. atronervia, Tayl. ; fronde subsimplici, elongata, angus- 

 tissime lineari, subadscendente, margine integerrima, flex- 

 uosa, nervo tenui, utrinque parenchymate atro-olivaceo 

 comitante; calyptris basi angustatis, ellipticis, apicc pistil- 

 liferis, basi squama oblonga laciniato-dentata tectis ; cap- 

 sula cylindracea. 

 Hab. Pillzhum, Colombia. Prof. William Jameson. Hook. 

 Herb. 



In loose patches, the young of a light green, the more aged 

 dark olive-green, with the parenchyma at each side of the 

 nerve nearly black. Fronds nearly 2 inches long, usually 

 simple, the lower half sending down rootlets, the upper free 

 and ascending. The calyptra closely invests the base of the 

 pedicel of the capsule, and hence appears stipitate. Valves 

 of the capsule irregular in breadth and in number, adnate at 

 their summits. This has the habit of Diploleena Hibernica, 

 Tayl., but is destitute of a true calyx. The frond is narrower 

 than in any described Symphyogyna. The capsule consists of 

 two membranes, of which the exterior is cuticular and very 

 thin, the interior composed of several parallel, longitudinal 

 series of cells. At maturity the inner membrane splits along 



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