Trachymene.] LVI. UMBELLIFERJA. 351 
lobes, mostly acute, with a few glandular hairs at the base and at the summit 
of the petiole, otherwise usually glabrous. Peduncles long and slender. 
Umbels rarely above 4 in. diameter with numerous small flowers on filiform 
the pedicels, Calyx-teeth minutely prominent. Disk shortly cup- -shaped. 
ag ES ripening both carpels, about 13 lines broad, smooth, or Ss 
muricate.— Didiscus procumbens, F. Muell. in Proc. Roy. Soc. Tasm. iii. 
Queensland. mem river, Moreton Bay, F, Mueller, Leichhardt, Mrs. Dietrich ; 
lizard Island, Ho *Gillivra, 
sa Benth. Stems from a perennial e erect, gla- 
brous or sprinkled with a few long hairs. Leaves on the lower part of the 
coarsely and acutely toothed or lobed, upper leaves small and linear. Pe- 
duncles slender. Umbels dense, scarcely above } in. diameter, but rather 
numerous, in a loose terminal panicle. Flowers very small, calyx with 1 or 
2 teeth usually prominent and shortly subulate. Fruit teduóed by abortion 
tol vhs about M lines long, granular or tuberculate.— Didiscus entree 
Bot. : : 
y. Soc. Tasm. i ii. 238 ; Hemicarpus didiscoides, F. Muell. in Hook. 
Kew Journ. vi. 18. 
N. Australia. Barren plains from Point Pearce to the mouth of the Victoria river, 
F. Mel ` 
or. Taller, umbels larger, with more numerous flowers.— Lacrosse Island, Cam- 
VE Gulf and Vansittart Ba KC Cunningham ; ëch) ek? Cape Lambert, Nichol 
T, Gregory's ee ; Glenelg district, Martin 
Pics -? rotundifolia, Leaves nearly orbicular, toothed only, not lobed.—Port Essington, 
strong, 
12. T. humilis, Benth. Stock perennial and densely tufted. Leaves 
E l, on long petioles, ovate or oblong, SC and obtuse or obtusely 3- or 
Victoria, Alpine and subalpine pastures in the Dg Zou F. Mueller. 
Tasmania. A Abundant in subalpine situations, J. D. Hook: 
3. SIEBERA, Reichb. 
(Trachymene, DC., not of Budge; Fischera, Spreng. (partiy), Sm. ; Platysace, Bunge ; Pla- 
tycarpidium, F. Mueller 
mall but usually conspicuous. entire, induplicate- 
| Calyx-teeth s e tals 
! Se = slightly i imbricate, concave, with the end inflexed, the midrib pro- 
bri 
nent inside, er bud tly 5-angled. - Disk flat and thick, or scarcely 
besides the th tegen reem Fruit laterally compressed, 
