Colenso. — On neiv Cryptogams. 237 



1-lf inches long, 1-H lines wide, tips obtuse ; scales broadly 

 deltoid acuminate, their centres green and somewhat turgid, 

 margins yellow, membranaceous, denticulate and wavy ; tips 

 long, acute, patent, decurved, their edges finely serrate-cut. 

 Capsules yellow, broader than scales, margins sub-sinuate, 

 entire, the inner valve larger. Spores white, orbicular and 

 sub-orbicular-cordate, much echinate, their trilateral suture 

 strongly marked. 



Hub. Highlands, County of Cook, with preceding; 1887: 

 Mr. W. K. Chambers. 



Obs. I. This is a fine stout leafy species; it has near affinity 

 with L. scariosum, Forst., (also a New Zealand Lycopodium,) 

 but differs from that species in several particulars : as in the 

 tips of its branchlets being forked and divergent ; in its more 

 distant leaves that are also unicoloured ; in the smaller ones 

 (or stipules) being subtristichous, longer, and much more 

 acute ; in its very long peduncles ; in its narrow and long 

 spikes, with differently shaped acuminate scales, and broader 

 capsules extending laterally beyond them ; and in its globular 

 echinated spores. 



II. This plant, from its somewhat resembling at first sight 

 L. scariosum, has caused me some considerable exercise in a 

 series of long, close, and repeated examinations. Fortunately, 

 I have received specimens of it in various stages and sizes, 

 with, also, full descriptions of L. scariosum by several cele- 

 brated botanists, and drawings with dissections by Sir W. 

 J. Hooker of L. scariosum, Forst., var. decurrens, Br., and of 

 L. jussieui, Desv., which two plants Sir J. D. Hooker says, 

 in his description of L. scariosum, are identical with it (" Hand- 

 book, Flora N.Z."). There is, however, very little, if any, 

 close affinity between those two drawings and this plant here 

 described (or even between those two drawings themselves). 

 Bentham ("Flora Australiensis") describes the spikes of L. 

 scariosum as being "sessile, about ^ inch long; bracts (or 

 scales) in four rows," etc., agreeing with the figure of L. 

 scariosum var. decurrens, Br. (supra), which species and name 

 he also refers to as a synonym; but he does not retain L. 

 jussieui, and, as I think, rightly, for they are apparently very 

 distinct. I again have much pleasure in recording the able 

 and ready assistance kindly rendered by Dr. W. I. Spencer, 

 F.L.S., in examining and determining its spores. 



Genus 4. Psilotum, Swartz. 



1. P. heterocarpum, sp. nov. 



Plant terrestrial ; rhizome hypogasous, shortly creeping, 3-4 

 inches long, slender, cylindrical, slightly branched with short 

 thickish rootlets, hairy ; hairs crowded, short, patent, clavate- 



