The Scientific Notebooks of German Orchidologist Friedrich Wilhelm Ludwig Kränzlin

130 Alfred J. Ewart:

demarcation based on a group of constant characters, for Diels' distinctions do not apply to all the specimens between this variety and the type species. The typical form of the closely allied C. Toddii of F. Mueller1 shows a trifling difference in the size and acuminate character of the bracts, while the prianth tube is rather more slender, is longer in proportion to the lobes, and somewhat more slender, and is more pubescent outside. Even these characters do not appear to be quite constant, so that C. Toddii may also ultimately prove to be a variety of C. Polycephalum when more intermediate material is available.

DAVIESIA CORYMBOSA, var. ST. JOHNII = D. CORYMBOSA, var. VIRGATA. (Papilionaceae).

This plant was recorded in the Victorian Naturalist, Nov., 1906, p. 133, and specimens have since been received from Mr. C. French, Jr., collected at Ringwood. They are identical with the D. virgata of Cunningham, which Bentham refers to D. corymbosa, var. mimosoides. The condensed clusters of small flowers and the very narrow leaves would, as suggested by Mr. W.R. Guilfoyle, justify the recognition of a second variety differing more widely from the type than var. mimosoides, even though transition forms occur, but the name should be variety virgata, in recognition of the old specific name for the variety.

DIPLOTAXIS MURALIS, D.C., the wall or sand mustard. (Cruciferae)

This introduced alien has also been variously referred to as D. muralis and D. tenuifolia, D.C. It has, however, the small flowers and less divided leaves of the former. The Australian specimens have the leaves less exclusively radical and more on the stem, and are often double the normal height, frequently reaching 12 to 16 inches. The plants also showa greater tendency to be perennial, but these changes are probably climatic ones, not necessarily of varietal significance, although they are approaches towards D. tenuifolia, D.C.

1 Fragm. vol x., p. 20.

Flora of Australia 131

ERISTEMON GRACILE, R. Grah. ([crossed out: Proteaceae] [added: Rutaceae]). In Edinb. N Phil. Journ. xvi., 1834, p. 175 = ERISTEMON DIFFORMIS, A. Cunn.

The former name is given as that of a valid species in the Kew Index, and the Nat. Herbarium possesses specimens from the Grampians, which are identical with forms of E. difformis, the glabrous petals and slightly longer flower stalks of the specimens being variable features in E. difformis. The specimens do not exactly tally with the description given in Mueller's Plants Indigenous to Victoria, I., 1860, p.125, but our specimens appear to be authenic. E. gracile is the older name, but to change the current one would be a frivolous interference with established nomenclature. Bentham seems to have entirely overlooked E. gracile, and makes no mention of it in the Flora Australiensis.

ERISTEMON INTERMEDIUS. (Proc. Roy. Soc. Vict., 19, 1907, p.40 = E. DESERTI, Pritzel (Fragm. Phytog. Austr. Occ., 1905. p.320).

The plant was described before Diels' and Pritzel's work was available. Their description is exceedingly condensed, and imperfect in several respects, but specimens of their plant since received show that the two species are identical, the older name standing. Pritzel seems to have overlooked the fact that the plant is an interesting connecting link, especially as regards the stamens between the Leionema section of "Phebalium" and Eriostemon proper. The close resemblance to E. Brucci, which misled Mueller, and to which Pritzel attaches undue importance, is mainly external.

EUPHRASIA COLLINA, R. Br. (Syn. E. BROWNII, F. v. M., Fragm., v. 88 (Scrophulariaceae)

There can be no doubt that Mueller was correct in placing four of R. Brown's species in one, but as was pointed out by Bentham, the proper course was to extend one of them to include the others, and so avoid a new name. Even considered as varieties, the line of demarcation is not distinct in all cases, and the type forms show a regular gradation from the dwarf, small-

Bot. Mag. tab. 7010. (1888) [7 black and white and color pencil sketches] Sarcochilus Hartmanni F. v. Müll. Fragm. VIII. 248. Thrixspermum Hartm. Rbch. f.