848 Transactions.— Botany. 
Plate XXVIII, fig. 8, plant nat. size; 8 a, leaf; 3 b, corolla; 3 ¢, 
diagram of corolla; 3 d, sepal; 8 ¢, ciliate capsule, etc. 
A small inconspicuous alpine plant, closely related to Logania tetragona, 
Hook. fil., but differing much from that plant in the small closely-arranged 
rigid branches and leaves, the sepals being hispid over the back and margins, 
and in the ciliated capsule. 
Named in compliment to J. B. Armstrong, who has added much to our 
knowledge of the Alpine Flora of New Zealand. 
Mitrasacme hookeri, Buch., u.s. 
Stems prostrate, much-branched, branches ascending, 1-4 inches high, 
} inch diameter with the leaves on. Leaves coriaceous, closely 4-fariously 
imbricate, spreading, linear, widening at the base, obtuse, connate in pairs, 
ciliate along the margins, convex at back. Flowers tetramerous umbelled, 
umbels consisting of several 4-flowered spikes, each spike having two 
opposite pairs of bracteate flowers, the whole forming a ball near the ends 
of the branches. Calyx deeply 4-cleft, lobes glabrous, veined and ciliate on 
the margins. Corolla with a short tube, lobes orbicular. Stamens 2, inserted 
within the mouth of the corolla. Anthers oblong, sagittate. Capsule large, 
ovate or obovate, 2-celled. Seed numerous, ovate. 
Hab.—South Island : Mount Alta, 5,000 feet alt. 
Plate XXIX, fig. 1, plant nat. size; 1a, leaf; 16, 4-merous flow 
spikelet with 2-opposite pairs of leaves; 1c, single flower; 14, bract, 
_ calyx, and capsule of lower pair of flowers; le, diagram of corolla; 14, 
capsule and stigma; 1g, sepal; 1h, flower-bract of upper pair of flowers. 
This plant bears a general resemblance to Hooker's Logania ciliolata. 
See Supplement to the “ Handb. of the N.Z. Flora,” but that plant 
described as having the flowers solitary in the axils of the upper leaves 
whereas in the present plant they are arranged in umbels of jensen? 
spikelets, agreeing with Bentham’s formula distinguishing between Logania 
and Mitrasaeme.* It has therefore been considered necessary to place the 
present and following species, M. cheesemanii, in that genus. 
Mitrasacme cheesemanii, Buch., n.s. : 
A small, much-branched, rigid, woody shrub, branches ascending, 3 
inches long, with the leaves on ;4, inch diameter. Leaves coriaceous, densely, 
4-fariously imbricate, triangular, acute, entire, concave, ciliate oP the 
margins of the lower half, connate in pairs at the base. Flowers ee 
umbelled, umbels consisting of 4 or more 4-flowered spikelets, each hav?S : 
opposite pairs of bracteate fl forming a small ball at the termination © 
» lormi 
branches. Calyx deeply 4-cleft, lobes linear-obtuse, ciliate on the satel 
* “Flora Australiensis,” vol. iv., p. 348. 
