Orchidee.) FLORA OF TASMANIA. | 25 
4. Microtis parviflora (Br. Prodr. 321) ; spica densa, floribus parvis, sepalis lateralibus oblongis 
revolutis petalisque obtusis, labello lineari-oblongo obtuso marginibus planiusculis nudis, disci dimidio 
superiore ecalloso.—Lind/. Gen. et Sp. Orch. 395 ; Bot. Mag. 3377; Endi. Ie. Gen. 1588. 
Has. Circular Head, Gunn ; dry ground near Cheshunt, Arcker.—(Fl. Dec.) 
DisrRrB. Tropical Australia, New South Wales, and Victoria. 
Smaller than any of the foregoing species, with smaller flowers, shorter ovaries, and a short, oblong, blunt, 
nearly plane labellum, its upper half thickened, but hardly callous. 
Gen. XII. ACIANTHUS, Br. 
Sepala patentia, acuminata v. aristata ; lateralia labello supposita. Petala minora, acuminata. Label- 
lum liberum, integrum, basi bicallosum, disco inappendiculato. Columna semiteres, clavata, inauriculata. 
Anthera terminalis, persistens, 2-locularis, recumbens. Pollinia 8, v. 4 bipartita.—Herba parve, tenere, 
membranacee ; tuberibus globosis, indivisis, caudicem terminantibus, novellis pedicellatis ; folio solitario, 
subsessili, late cordato, reticulato-venoso ; floribus paucis, racemosis. 
A very small genus, of delicate, shade-loving, inconspicuous plants, found in temperate Australia and New Zea- 
land.—Roots of prostrate caudices, ending in small, round tubers. Stems slender and succulent, with one broadly- 
cordate, sessile, membranous, reticulated leaf. Flowers few, red-brown, racemose. Sepals and petals slender, acu- 
minate, or terminated in a subulate point. Ladellum projecting, undivided, with a uaked disc, and two calli at its 
base. Column long, slender, not dilated into auricles, Anther deciduous, placed rather behind the apex of the 
column (as in Neoffiee). (Name from axvs, a needle, and avdos, a flower ; in allusion to the pointed perianth.) 
1. Acianthus caudatus (Br. Prodr. 321); floribus 1-3, sepalo dorsali longissime setaceo acumi- 
nato, lateralibus brevioribus petalis triplo longioribus, labello lanceolato.—Lind/. Gen. et Sp. Orch. 397. 
(Gunn, 158.) (Tas. CXIX. B.) 
Has. Common in shaded moist woods: Woolnorth and Circular Head, Gunn; Chudleigh, Archer ; 
Hobarton, J. D. H.—(Fl. Oct.) (v. v.) 
Disrmrs. New South Wales. 
Stems 3—5 inches high. Leaf acuminate, with often undulated margins. Flowers one to three, deep, dark 
brown-purple. Dorsal sepal extremely long and narrow, erect, nearly an inch long, much longer than the lateral, 
which are twice as long as the petals.—PraTE CXIX. B. Plant of the natural size. 
2. Acianthus exsertus (Dr. Prodr. 321); floribus racemosis, sepalo dorsali ovato-lanceolato aris- 
tato, lateralibus subulato-lanceolatis «equilongis, petalis horizontaliter reflexis sepalis 3 brevioribus lanceo- 
latis acuminatis, labello apice papilloso.—Zindl. l.c. 397. (Gunn, 752.) (Tam. CXIX. A.) 
Has. Circular Head, in light soil, Gunn ; rocky ground near Cheshunt, 4rcher.— (Fl. ond 
Distris. New South Wales and Victoria. 
Similar in habit to 4. caudatus, but with more (four to six) flowers, which are much smaller, with far shorter, 
paler-coloured sepals and petals, whose slender points are thickened at the tips.—PrATE CXIX. 4. Fig. 1, flower; 
9, labellum ; 3, front, and 4, side view of column; 5, pollen :—all magnified. 
Gen. XIII. CYRTOSTYLIS, Br. 
Sepala patentia, linearia (non aristata), dorsali erecto, lateralibus labello suppositis, equilongis. Petala 
demissa. Labellum porrectum, planum, obtusum, indivisum, basi bicallosa. Columna gracilis, subgenicu- 
lata, versus apicem dilatata. Anthera biloeularis, terminalis, persistens, teres. — Po//inia 4.—-Herbee habitu 
etc. Acianthi. í 
VOL. II. H 
