45. D. bipinnatifida, R.Br. Prot. Nov. 39. Stems very short or procumbent and ½ ft. long or rather more, densely woolly-villous but the base of each year's growth concealed by imbricate scales. Leaves 6 in. to 1 ft. long, pinnate with linear acute segments, entire or again pinnatifid as in D. Preissii, 1 to 2 in. long in some specimens, much smaller in others, all with revolute margins, reticulate and tomentose underneath. Flower-heads terminal but not closely surrounded by floral leaves. Involucre ovoid-oblong, 2 to 2½ in. long, the outer bracts ovate, the inner ones narrow-lanceolate, all obtuse, more or less woolly-villous or at length glabrous, but not black as in the preceding species, the paleæ within the head shorter and narrow. Perianth shorter than the involucre, about 1½ in. long, loosely villous or pubescent below the middle, glabrous towards the end, the very narrow limb ½ in. long. Style exceeding the perianth, with a long furrowed stigmatic end. Capsule about ½ in. broad.—Meissn. in Pl. Preiss. i. 599, and in DC. Prod. xiv. 480.
W. Australia. Swan river, Fraser, Drummond, 1st coll. n. 644, Preiss, n. 522. In the only fruit I could examine the seed was destroyed by insects. According to R. Brown, the outer integuments of the inner faces of the two seeds are free from the seeds and from each others (or separable), forming a double plate between the seeds.
46. D. pteridifolia, R. Br. in Trans. Linn. Soc. x. 215, Prod. 399. Stems very short and thick, densely tomentose and villous. Leaves often above 1 ft. long, pinnately divided almost or quite to the midrib into numerous linear or lanceolate straight or falcate segments, ¾ to 1½ or even 2 in. long, often distant but usually dilated at the base and frequently confluent, all with recurved or revolute margins, more or less tomentose underneath, 1-nerved in some leaves, 3- to 5-nerved in other leaves on the same stem. Flower-heads large, terminal, closely surrounded by long floral leaves. Involucre hemispherical, the bracts densely villous, the outer ones ovate, the inner one lanceolate, ¾ to above 1 in. long. Perianths about 1¼ in. long, silky or loosely villous with long hairs, the limb 4 to 5 lines long. Style about as long as the perianth, with a long furrowed stigmatic end. Capsule about ¾ in. broad. Seeds in the two fruits examined quite separate without any intervening plate, each with a double wing, the inner one more transparent with flexuose fibres, the outer one (membranous appendage, R. Br.) more opaque.—Meissn. in DC. Prod. xiv. 480; Bot. Mag. t. 3500; D. blechnifolia, R. Br. in Trans. Linn. Soc. x. 215, Prod. 399; D. nervosa, R. Br., in Sweet, Fl. Austral. 22, Prot. Nov. 39; Meissn. in Pl. Preiss. i. 600, and in DC. Prod. xiv. 481. Bot. Mag. t. 3063.
W. Australia. King George's Sound and adjoining districts, frequent, R. Brown, Baxter, A. Cunningham, Drummond, n. 131, 4th coll. n. 320, 5th coll. n. 423, Preiss, n. 512, and others; scrubby plains from Stirling to Phillips Ranges and to Cape Arid, Maxwell. The breadth of the leaf-segments and the size of the flower-heads do not appear to be sufficiently constant to establish distinct varieties.
47. D. calophylla, R.Br. Prot. Nov. 40. A low shrub, the villous stems either very short and thick or rather longer and prostrate.
