4 FLORA OF TASMANIA. | Orchidee. 
feathery lobes ; and in 7. angustifolia it is somewhat similar, but with the lobes crenate. The two former of these vary 
extremely in size and habit, from a slender, thread-like, one-flowered herb, 6 inches high, to a tall, stout herb, 18-24 
inches high, with six or seven flowers. The other species (T. angustifolia) does not vary so much in form and 
stature, being usually larger, stouter, and with larger flowers and leaves, but a good deal in the apex of the column, 
whose lobes are crenate, toothed, or fimbriate, long or short, broad or narrow, and whose lateral lobes with feathery 
apices are sometimes quite erect, and much longer than at others. 
How far a local botanist may be able to discriminate some of these forms of izioides and nuda in various parts _ 
of the colony (and in South-eastern Australia, where they are all very abundant), it is impossible for me to say; but, 
after a very diligent study of the column of all Gunn's specimens, and of a most beautiful selected series of Archer's, 
accompanied with coloured drawings, and dissections of varieties of them, both Mr. Archer and myself have come 
to the conclusion that the above is a near approximation to the actual number of well-marked forms existing in 
Tasmania. (Name from GeAvpurpa, in allusion to the hooded column ; that of Macdonaldia was given in honour of 
Mrs. Macdonald Smith.) 
$ 1. MACDONALDIA.— Column bifid at the apex, its sides not produced into toothed or Jeathery arms. Anther 
projecting, generally more or less granular or villous. 
1. Thelymitra antennifera (Hook. fil.); caule flexuoso 1-2-floro, floribus amplis flavis, columne 
apice bifido lobis carnosis cuneato-obcordatis purpureis, lateralibus nullis, anthera acuminata villosa.— 
Macdonaldia antennifera, Lindl. Bot. Reg. App. n. 217. 4.9 C.; Gen. et Sp. Orchid. 385; Endl. in Pl. 
Preiss. ii. 4. (Tas. CI. A.) 
Has. Moist ground near Georgetown, Archer.—(Fl. Oct., Nov.) 
Disrris. South coast of Australia, from Victoria to Swan River, 
slender, the scape with a double flexure, and two lanceolate 
bracts, one below each flexure.—Leaf narrow, linear. Floral bracts obtuse. Flowers 3-1 inch across, pale or 
ich is produced into two small purple obcordate append- 
linear-oblong to broadly elliptical-oblong, acute or almost 
» section of leaf; 2, side view of column ; 3, front view of ditto; 4, the same, verti- 
cally cut; 5, hairs of anther :—a7/ magnified. 
2. Thelymitra Smithiana (Hook. fil.) ; caule flexuoso 1-2-floro, floribus parvis flavis, column 
apicis lobis 2 brevibus rotundatis, lateralibus nullis, anthera obtusa villosa.—Macdonaldia concolor, Gunn, 
MSS.; Lindl. in Bot. Reg. App. n. 211. t.9 B. ; Endl. in Pl. Preiss. ìi. 4; Lindl. Gen. et Sp. Orchid. 385. 
Thelymitra concolor, Lindi. Le. T. flexuosa, Endl. Decad. 29. (Gunn, 945.) (Tas. CI. B.) 
Has. Sandy soil near Circular Head, Mrs. Smith ; Georgetown, abundant, Archer.—(Fl. Oct., Nov.) 
Distri. South-western Australia. 
Similar in habit to 7. antennifera, and with the same double flexure of the scape, 
are longer, almost leafy, and the flowers very much smaller, not 2 inch across. —Segmen 
tinged with pink externally. Apex of column with two blunt lobes. 
section of leaf; 2, lateral, and 3, front view of column; 4, hairs of a 
but the bracts on the scape 
ts of the perianth pale-yellow, 
Anther villous, blunt.—PraATE CI. B. Fig. 1, 
nther :—all magnified. 
3. Thelymitra venosa (Br. Prodr. 314); caule strictiusculo 1—3.floro, floribus cyaneis venosis, 
perianthio connivente, column apicis lobis linearibus involutis, lateralibus nullis, anthera apice biloba basi 
papillosa.—Macdonaldia cyanea e£ M. venosa, Lindl. Bot. Reg. App. 217; Gen. et Sp. Orchid. 386. 
(Gunn, 938, 944.) (Tas. CIL 4.) 
Has. Moist ground, flooded in winter. 
Circular Head and Rocky Cape, Gunn ; Cheshunt and Port 
Sorrell, Areker.— (Fl. Dec.) | 
