126 ORCHID ACEAE. 5. Prasophylium. 



thickened in the erect part, becoming increasingly thickened as it crosses the constriction 

 and ending very abruptly near the tip. Anther without a point, nearly as high as 

 rostellum. Rostellum with a conspicuous disk, bifid when the disk is removed. Caudicle 

 rather short. Lateral appendages same height as anther, widely linear with obliquely 

 truncate or slightly emarginate tips, basal lobes rounded reaching to about the middle ; 

 not adnate to the sides of the stigmatic plate. Stigma large reniform. 

 Tailem Bend. Early Oct. 



6. P. odoratum (fragrant), Rogers. (PL 6, iii., figs. 6-9. ) Usually tall and robust, 30-90 cm. 

 high. Leaf-lamina of varying length, often exceeding the spike. Flowers pink and white, 

 strongly perfumed. Dorsal sepal about 10 mm. long, ovate-lanceolate, often much 

 recurved in old flowers, incurved in younger ones ; lateral sepals about same length, 

 dilated at the base, with conical points, very divergent. Petals rather shorter, pinkish 

 with white tips or white with brownish stripe, linear-lanceolate. Labellum as long as 

 the sepals, conspicuously white, sessile or nearly sessile, oblong-lanceolate, acutely reflexed 

 about the middle, tip looking between the lateral sepals ; erect part rather bulging, 

 margins entire ; reflexed part bluntly triangular with very crenulated margins ; lamina 

 with large pyramidal green callus at its base ; the callous plate (fig. 7, cpl.) not very thick 

 in the erect part but more prominent towards its termination just beyond the bend ; 

 membranous portion very voluminous and exceeding the callus. Anther much shorter 

 than rostellum. Rostellum elongated, triangular, rather higher than the lateral appen- 

 dages (fig. 8, ap.). Pollinia 2, large, each markedly bilobed. Caudicle (fig. 8, cd.) linear 

 about as long as anther. Lateral appendages falcate with rounded basal lobe, rather 

 shorter than rostellum, adnate to the entire sides of the stigmatic -plate and slightly to 

 the base of the stigma itself. Stigma reniform. 



N.P. Widely but not numerously distributed throughout the State ; also in Victoria. 

 Nov. 



Var. album, Rogers. A smaller plant with smaller flowers than the type, and with 

 fewer pink tints, otherwise with similar coloring. The flowers in this State are not per- 

 fumed. The flexion of the labellum is seldom so acute as in the species and the reflexed 

 part is usually shorter than the erect part. 



Victor Harbor ; Grunthal ; Kadina ; Yorke Peninsula ; also Victoria. Sept-Nov. 



7. P. rotundiflorum (round-flowered), Rogers. A slender species, about 18 cm. high. 

 Flowers yellowish- white ; presenting a somewhat globular appearance, owing to the 

 tendency for sepals and petals to converge at their tips to a point. Perianth-segments 

 of equal length. Dorsal sepal concave, acuminate, about 8 mm. long ; lateral sepals 

 free, lanceolate, curving upwards on each side of the labellum, yellowish -green. Petals 

 bluntly linear, white with pinkish central stripe, incurved. Labellum on a short claw, 

 bulging at the base ; acutely reflexed about the middle ; apex protruding between the 

 sepals ; white with large crisped membranous portion ; callous part relatively small and 

 not very thick, extending only a short distance beyond the bend. Column prune -colored. 

 Anther very much shorter than rostellum. Caudicle long, about half the length of the pollinia. 

 Lateral appendages narrowly lanceolate, very acute, about as high as rostellum, with a 

 short basal lobe and a curved linear intermediate lobe. Rostellum very long, narrow, 

 erect. 



Cherry Gardens. Early Oct. 



8. P. patens (spreading, referring to perianth -segments), R.Br. Slender, usually 

 10-30 cm. high. Flowers generally green, greenish, or brownish ; sessile or almost so ; 

 ovary turgid but less so than in P. fuscum, and not outstanding from the axis of the 

 spike as in that species. Dorsal sepal rather less than 8 mm. long, ovate -lanceolate, 

 generally moderately recurved in the mature flower ; lateral sepals about 8 mm. long, 

 free, lanceolate, generally slightly bidentate, not inflated at the base, almost parallel. 

 Petals less than 6 mm. long, linear, spreading. Labellum almost sessile, ovate-lanceolate, 

 varying in degree of flexion but not abruptly bent ; margins crenate or crenulate ; mem- 

 branous border often whitish (but never pure white), greenish -yellow or light prune, 

 greater in extent than callous portion, but not markedly so ; the callous plate never 

 very prominent and terminating some distance from the tip but well beyond the bend. 

 Anther dark-brown, with very short point, much shorter than rostellum. Pollinia 2, of 

 usual form and attachment. Caudicle of medium length, linear, attached to a narrow 

 triangular disk. Lateral appendages narrow-oblong with smooth blunt or notched tips 

 and small rounded basal lobe, shorter than the rostellum, only adnate at their extreme 

 base to the sides of the stigmatic-plate. Rostellum erect, not very long, bifid after 

 removal of disk. Stigma reniform. 



N.P. ; widely distributed on plains, hills, and Kangaroo Island ; also in all the 

 Eastern States. Sept. -Nov. 



Var. pruinosum, Rogers. Flowers prune-colored, not scented ; lateral appendages 

 with a long basal lobe. 



N.P. ; and other parts of Mount Lofty Range. Oct-Early Nov. 



