21 



ilate with, an enlarged lobe on the upperside at the base. In all con- 

 ditions one or both of the pair of basal segments are enlarged, the up- 

 per most so, and they increase in relative proportion as the pinnae 

 dwindle to trifoliate segments at the base of the fronds a differs only 

 in its relatively very compact habit, darker colour and pubescent sur- 

 faces. 



3. N. caribceiim, Jenm. Stipites densely tufted, slender, erect, light 

 brown, slightly scaly at the base, 2-4 in. L slightly channelled, 

 puberulous ; Ironds erect, bipinnatifid, 1J-1J ft. L 3-4 in. w., 

 gradually dwindling at the base to small trifid or trifoliate segments, 

 firm in substance, pellucid, dark green above, paler beneath, slightly 

 ciliate on the ribs above, beneath glabrous or puberulous ; rachis light 

 brown, slender, puberulous, faintly channelled ; pinnae spreading, 

 sessile, contiguous or more or less apart, broadest at the base from 

 whence they taper to the acuminate serrate-entire point, 2 in. 1. 4-5 li. 

 w., subequilateral, uniformly deeply pinnatifid, or the very base fully 

 pinnate ; segments linear-oblong, close, except the enlarged basal pair 

 which are nearly or quite free, f-1 li. w. 2 li. 1. (the basal ones 3 li.) ; 

 veins close, simple ; sori medial, copious involucre evident, ciliate. — 

 Journ. Bot. Sept. 1886, 270. 



Infrequent, gathered onMt. Diablo, St. Ann, 2,000 ft. altitude. This 

 comes near the variety magnum of iV. sanctum which it a good deal 

 resembles, but is a still larger plant, and further marked from that by 

 its puberulous surface, and the pinnae which are generally from one to 

 three times their own width apart being uniformly pinnatifid only, 

 from the pair of enlarged basal segments outwards. A very slender 

 plant. — Endemic. 



4. JV", Nockianum, Jenm. — Rootstock small, erect, stipites tufted, 

 erect, very slender, brownish, 4-6 in. L channelled, puberulous or be- 

 coming naked, a few small deciduous brown scales near the base ; fronds 

 erect, bipinnatifid, 1-2 ft. ft, 3-4 in. w. lanceolate, or oblong-lanceo- 

 late, the base reduced gradually or abruptly, but usually not tapering ; 

 pinnae spreading horizontally, oblong-lanceolate acuminate, sessile, 

 close, or more or less distant, the reduced lower ones most distant, and 

 usually rather deflexed ; central 1J-2 in. L 5-6 li. w., the acuminated 

 point, which is not sharp, serrulate-entire, within this pinnatifid nearly 

 to the costae ; segments close, nearly or quite straight, but rather 

 oblique, rounded aad even or faintly crenulate at the point, not wider 

 at the base, 3 li 1. f-1 li. w. ; rachis very slender, finely grayish or 

 rusty pubescent, channelled, costae similar, other surfaces glabrous, or 

 the upper slightly ciliate, glandulose and pale beneath, above dark 

 green ; veins oblique, simple, or the posterior one of the segments on 

 the inferior side of the pinnae forked, about six to a side ; sori nearer 

 the margin, involucres developed, ciliate. — Journ. Bot. Dept. 1886. 

 270. 



Infrequent in open places at 4,000-5,000 ft. altitude. Marked by its 

 slender character, contiguous pinnae, their translucent texture few veins 

 thin and very pellucid substance and glandulose surface. — Endemic. 



5. N. neyligens, Jenm. n. sp.— Root stock small, upright, fibrous, 

 scurfy; stipites very slender, brown, naked, channelled, £-f in. L; 

 fronds bipinnatifid, a span or over long, 2-2 j in. w. the apex tapering 

 through diminishing lobes to the linear bluntish point, gradually reduced 



