C. H. Ostenfeld: Contributions to West Australian Botany. II. 35 



distinct, although very short. This may be an independent species, 

 but at present I prefer to take it as the opposite extreme both to 

 the original T. centrocarpa as figured by Hooker from Drummond's 

 specimens from Swan River district and to the following form. 



(2) var. longicarpa nov. var. (fructus anguste linearis, 5 — 5,5 mm 

 longus, basi haud calcarata). A specimen sent from the Nat. 

 Herb, of New South Wales collected by M. Koch in W. A. : Watheroo 

 Rabbit Fence (9. 1905) is large (11 cm high) and has unusually 

 long and slender fruits (5—5,5 mm), but does not otherwise differ 

 from the usual T. centrocarpa. 



I characterize T. centrocarpa Hook, in the wider sense in the 

 following manner: Small to medium-sized (3 — 11 cm), leaves se- 

 taceous-filiform, much shorter than the scapes; flowers 4 — 25, 

 sessile or stalked ; fruits erect to erect-patent, pyramidal-linear to 

 shortly linear, 2 — 4 (rarely 5,5) mm long; carpels slightly dilated 

 at the base, with very short basal (not curved) spur and bluntly 

 keeled or rounded back. 



The form with nearly sessile fruits and keeled back of the 

 carpels has usually longer fruits (3 — 4 mm) and their base a little 

 more dilated; it may be named a, typica. Under this comes var. 

 longicarpa. 



The form with distinctly stalked fruits and rounded back of 

 the carpels has usually shorter fruits (2 — 3 mm) and hardly any 

 basal dilation, and for this we may use F. v. Müller's name, 

 calling it ß, nana (F. v. Müll, pro sp.). As an extreme of this 

 var. brevicarpa may be taken. But as said above, it is in many 

 cases not possible to refer specimens to one form or the other, 

 as they are more or less intermediate. 



T. centrocarpa is widely distributed from Victoria and Tas- 

 mania to West Australia. 



5. Triglochin minutissiina F. v. Müll., Fragm. Phytogr. Austr. 

 VI (1867) 82; Buchenau, Abh. Naturw. Ver. Bremens II (1871) 498; 

 Pflanzenreich (1903) 14. 



F. v. Müller writes (1. c.) that he has distributed a Triglo- 

 chin "sub nomine T. minutissimæ" : "quæ a formis minimis et gra- 

 cillimis T. nanæ jam dignoscitur fructibus pertenuibus fere sessili- 

 bus. Cum T. nana earn consociatam vidi ad portum Philippi, ad 

 montes Stirlingii, ad flumen Murrayi. Ab hac facillime discerni 

 potest T. trichophora (Nees in Lehm. PI. Pr. II, 54) jam propter 

 fructum turgidulum separanda; præterea hæc ultima sæpe multo 

 robustior est. Planta Preissii 2409 est T. minutissima". To this 



