344 Transactions.— Botany. 
Plate XXIV., fig. 1, plant nat. size; 1 a, flower; 1 6, pod; 1 ’, seed; 
1 ¢, 1 c’, leaves. 
The present plant was collected on Mount Alta, Wanaka Lake District, 
where it is found on exposed ridges not under 5,000 feet alt., either in firm 
shingle or in crevices of the rocks, where it is often surrounded by snow. 
The progress of flowering and seeding is rapid, as the heat during the day 
in sunshine at these high altitudes is intense, producing a rapid vegetation. 
Pachycladon glabra, Buchanan, n.s. 
A short depressed, glabrous, alpine plant. Root long, fusiform, 1} inch 
diameter, bearing 1-2 stout branches, each terminating in a loose rosulate 
head of long slender leaves. Leaves 3-1 inch long including the petiole, in 
irregular series, pinnatifidly lobed and narrowed into long flat petioles. 
Scape leaves long narrow linear. Scapes few, shorter or longer than the 
leaves, and rising from the branches below them, 1-3 flowered. Flowers 
white, 4 inch long. Sepals linear-obovate, petals longer than the sepals, 
narrow linear-obovate, rounded at top, tapering at bottom to a narrow point; 
stamens six, two longer than the others; pods } inch long, =, inch broad, 
laterally compressed, linear, septum complete; seeds 8-10 in each valve, 
ovoid. 
Hab.—Mountain range, head of Lake Ohou, 5,000 feet alt.—Buchanan 
and McKay, 1881. 
Plate XXIV., fig. 2, plant nat. size; 2 a, flower; 25, 6’, pod and sec- 
tion ; 2 ¢, leaf. 
The present plant may probably be considered as only a form of Pachy- 
cladon nove-zealandia, produced by climatic causes; the prevailing hot 
winds of the Lake Ohou District, where it was collected, being well know2 
to exercise a great influence on the vegetation of both mountain and low 
lands. The upright habit and glabrous parts however of the present plant 
with other changes in the inflorescence necessitate a distinguishing name- 
Notothlaspi notabilis, Buch., n.s. 
A small circular densely-leaved biennial (?) plant, with the inflorescence 
forming a terminal sphere of small white flowers; stem none; leaves 
numerous, 3-1 inch long, spathulate, crenate on the upper half, sparsely 
covered on margins and surface with ribbon-like hairs, 1-veined, and pitted 
on the surface; scape, 1-2 inches long, hollow, apparently formed by the 
union of the petioles, thus probably relegating the leaves to flower bracts; 
pods, 4 inch long, obovate, with a very short style. 
Hab.—Mountain nae. head of Lake Ohou, 3,000 feet alt, Buchanan : 
and McKay, 1881. 
Plate XXV. figs. 1, 2, plant nat. size, different views; 3, flower: spot 
ee 5 a, portion — 
