349 



Additions to the flora of South Australia. 



No. 16. 



By J. M. Black. 



[Read October .9, 1919.] 



Plate XXXII. 



GRAMINEAE. 



Dactyloctenium aegyptiacum, Willd. (Eleusine aegypt- 

 iaca, Pers.) Mount Deputy, near Mount Eba H.S. (Dist. W; 

 G. Taylor). 



* Lamar ckia aurea, Moench. Nuccaleena Mine, near 

 Moolooloo (E. H. Ising). The most northerly record for this 

 grass. 



Cyperaceae. 



Scirpus littoralis, Schrad. Billakalina Well, 20 miles west 

 of Coward Springs (Dist. C; Dr. G. Taylor, May, 1919). 



Gyperus distachyus, All. (Plate xxxii.) Coward Springs 

 (Dr. G. Taylor, May, 1919); Nilpena (R. Helms, May 2, 

 1891, in the Tate Herb.). The latter is evidently the same 

 plant as that collected at Coward Springs, but some of the 

 spikelets are twin, whereas they are always solitary in Dr. 

 Taylor's specimen. Helms' plant was listed by Mueller and 

 Tate (these Trans., xvi., part 2, 379, ann. 1896) as 

 "C . laevigatas, L., a slender form with some of the spikelets 

 solitary." C . distachyus, All. (C . junciformis, Cav.), is some- 

 times treated as a variety of C. laevigatus, but it appears to 

 be well distinguished by having fewer spikelets (2-5) in the 

 cluster, the glumes dark-red instead of white and the nut 

 only one-third (instead of one-half) shorter than the glume. 

 Our plant agrees with the description in all particulars 

 except that, so far as our present material goes, the spikelets 

 are either solitary or only 2 in the cluster. The Tate 

 Herbarium contains a specimen labelled C. laevigatas, from 

 Middleton Creek (Miss Hussey, Feb.,, 1898), with white spike- 

 lets in clusters of 8-16. The same species is recorded in Max 

 Koch's list of plants from Mount Lyndhurst run (these Trans., 

 xxii., 116, ann. 1898). When Professor Tate's flora was 

 published, neither species had been recorded for South 

 Australia. C. distachyus is a Mediterranean plant, but it is 

 doubtless native here. 



