718 
LX. UMBELLIFERiE. 
[Trachynicne. 
4. T. glandulosa (hairs glandular), Benth. FI. Austr. iii. 850. Erect and 
apparently annual or biennial, hirsute with short glandular hairs. Leaves shortly 
petiolate, deeply divided (but not to the base) into 8 oblong-cuneate rather broad 
coarsely toothed or incised lobes. Peduncles long, glandular-hirsute. Flowers 
small, in umbels of about Ain. diameter. Involucral bracts shorter than the 
pedicels, united at the base. Calyx-teeth obsolete. Disk broad, rather thick. 
Fruit reduced by abortion to a single carpel, about 2 lines long and almost as 
broad, granular-tuberculate, not winged. — Didiscm t/latidulosus, F. v. M. in Proc. 
Roy. Soc. Tasm. iii. 288. 
Hab.: Gulf of Carpentaria, /• . v. Mueller. 
5. T. incisa (leaves much divided), lludye in Trans. Linn. Soc. x. 800 t. 21 ; 
Benth. FI. Austr. iii. 350. Glabrous or rarely with a few long hairs on the radical 
leaves. Stems from a thick perennial rootstock, erect, thin but rigid, 1 to 2ft. 
high. Leaves chiefly radical or on the lower part of the stem, on long petioles, 
not large, 8 or 5-partite, the segments often again twice trifid with narrow acute 
lobes, the upper leaves few small and less divided. Peduncles long. Bracts 
much shorter than the pedicels. ' Flowers small. Calyx-teeth more distinct than 
in the preceding species. Disk very prominent. Fruit ripening both carpels, 
about 2 lines broad, obtusely muricate. — Didiscus albiflorus , DC. Prod. iv. 72. 
Hab.: Near Brisbane ; Stanthovpe. 
Var. pilose. Sprinkled with a few Ion" hairs ; umbels rather larger. 
6. T. procumbens (procumbent), Benth. FI. Austr. iii. 350. Stems from a 
perennial rootstock elongated, procumbent or ascending, slender, quite glabrous 
or slightly glandular-pubescent. Leaves of the stem as well as the lower ones on 
slender petioles, tripartite, each segment again deeply divided into narrow-cuneate 
or lanceolate toothed or incised 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 Ain. diameter with numerous small 
flowers on filiform pedicels of above 2 lines. Involucral bracts setaceous, much 
shorter than the pedicels. Calyx-teeth minutely prominent. Disk shortly cup- 
shaped. Fruits usually ripening both carpels, about 1A line broad, smooth or 
tubercular muricate. — Didiscus procumbens, F. v. M. in Proc. Roy. Soc. Tasm. iii. 
287 . 
Hab.: Brisbane P.ivCr, Moreton Bay, F. v. Mueller, Leichhardt ; Itockinghani Bay, ./. 
Deillachy (F. v. M.), Mrs. Dietrich ; Lizard Island, M'GilUcrag. 
3. SIEBERA, Reichb. 
(After F. W. Sieber.) 
(Traehymene, DC., not of Rudge : Fischera, Spreng. (partly), Sin.; Platysaee, Bunge : 
Platycarpidium, F. v. Mueller.) 
Calyx-teeth small but usually conspicuous. Petals entire, induplicate-valvate 
or slightly imbricate, concave, with the end indexed, the midrib prominent 
inside, tbe bud prominently 5-angled. Disk flat and thick, or scarcely any 
besides the thick conical base of the styles. Fruit laterally compressed, slightly 
notched at the base, without vittae ; carpophore persistent ; carpels more or less 
turgid, but flattened at the commissure, the dorsal rib usually prominent, the 
lateral ones concealed in or slightly prominent at the narrow commissure, the 
intermediate ones usually faint. Seed more or less compressed but often not 
filling the cavity. — Rigid herbs with a perennial almost woody stock and virgate 
branches, or heath-like shrubs, glabrous or slightly glandular-pubescent. Leaves 
all entire or tbe lower ones divided or all reduced to small scales, without stipules. 
Umbels compound or rarely simple, terminal. Involucral bracts small. Flowers 
small, white. Fruit small. . 
The genus is confined to Australia. 
