Bucuanan.—On the Root-stock of Marattia fraxinea. 529 
shaped nuclei of fibro-vascular and scalariform bundles. The bundles dis- 
tinetly wedge-shaped, the root thus showing a stronger affinity in structure 
to the Hquisetacee than to Ferns, and presenting an additional reason to the 
difference in Sporangia, why Marattiacee should be separated from Ferns. 
Fig. 7.—Starch grains of Marattia fraxinea, Sm. 
Norr.—I am also of opinion, although requiring longer observation to 
prove satisfactorily, that the rhizomes of the New Zealand Botrychium and 
Ophioglossum are built up, or added to, by a similar method to that of 
Marattia. 
Art. LXXV.—Gnaphalium (Helierhysum) fasciculatum, sp. nov. 
By Jonn Bucuanan, F.L.S. 
[Read before the Wellington Philosophical Society, 16th September, 1876.] 
e XIX. 
A pENSELY-tufted plant with wiry thread-like roots. Stems 1,3, inch high, 
branching. Leaves imbricating all round the branches, erect, ,*, inch long, 
narrow oblong, acuminate, obtuse, striate, upper half covered on both sides 
with closely appressed, silvery-white tomentum ; lower half brown, glabrous 
in front, covered on back with soft silky white hairs. Heads, 1-4 flowered 
on each branch, forming a sessile closely compacted fascicle, involucral 
scales in 2 or more series, narrow linear, spathulate, rounded or notched at 
top, and finely serrated, glabrous and shining, white on upper half, shining 
pale green or white on lower half, with a tuft of silky hairs near centre 
of upper surface; receptacle conical, rough or hispid ; pappus hairs few, 
swollen, scabrid. Achene linear, silky, with a thickened areola at bottom. 
Collected by H. H. Travers on the Tararua Mountain, where it was 
found growing on the ground in close patches. 
This species is very similar to Raoulia grandiflora, Hook., fil., and might 
be taken for a many-flower-headed variety ; it is larger in all its parts, and 
a more showy plant. 
DESCRIPTION OF PLATE. 
1. Plant, nat. size. 2. Floret of the disc. 3. Involueral scale, back view. 4. Anther. 
5. Pistil. 7. Leaf. 
Art. LXXVI.—Revised descriptions of two species of New Zealand Panax. 
By Jonn Bucuanan, F.L.8. 
[Read before the Wellington Philosophical Society, 16th September, 1876.) ] 
No. 1. Panaw crassifolinm, Dene. and Planch. 
A small tree 20-25 feet high. Stem 8-12 inches diameter, irregularly 
Q2 
