First Contribution to the Flora of Australia. 551 
I must express my gratitude to the authorities of Queensland, who 
helped me to carry out my scheme and many friends in that hospitable 
State, especially Mr. F. M. Bailey, the Government Botanist, and to Mr. 
J. Shirley, the Inspector of State Schools. For the kind assistance in 
my work at Kew, I am indebted to all officers of the Herbarium, chiefly 
to Dr. O. Stapf, the Keeper of the Herbarium. 
1. Adiantum formosum R. Br. var. leptophyllum Domin, nov. var. 
Pinnis segmentisque rigidioribus confertis. segmentis minoribus, 
maximis ca. 5 mm longis oblique late obovatis nervis prominentibus 
percursis. | 
Queensland: Moreton Bay, coll. Fitzalan. 
A characteristic variety, readily distinguished from the type by 
smaller and more rigid fronds, with small and crowded pinnulae. The 
frond attains the length of 30 cm without its stipe and is at the base 
4 times pinnate. 
2. Psilotum triquetrum Sw. var. fallacinum Domin, nov. var. 
Ramis numerosis longissimis pauciramosis pendulis latioribus ac in 
iypo sed triquetribus. 
North Queensland: Yarraba (coll. Domin 1910). 
This well-marked variety resembles in its appearance Ps. compla- 
natum Sw., which differs from it in having broader and flat branches. 
I found it growing on trees or in tufts of Platycerium alcicorne with very 
elongated, drooping, repeatedly dichotomous divided stems. It cannot 
be merely a form of Ps. triquetrum, as the type is often to be found 
growing under similar circumstances. 
Our variety is not confined to Australia. I saw a very similar form 
from Madagascar (from the sea to Antinanarivo) collected by Dr. Meller 
in 1862, 
8. Aristida vagans Cav. var. gracilipes Domin, nov. var. 
Panicula elongata sed angusta laxissima, ramis paniculae tenuibus 
arcuato-patentibus, spiculis longius pedicellatis, pedicellis cappilaribus, : 
glumis conspicue inaequalibus (7 mm et 4—4!/, mm longis), aristis ca- 
pillaribus media lateralibus conspicue longiore. 
New South Wales: Cameroon Brush, coll. Leichhardt. 
4. Aristida Leichhardtiana Domin, nov. spec. 
Perennis caespitosaque, culmis cum panicula ca. 4 dm altis supra 
medium foliatis, folis perangustis apice subulatis convolutis vel sub- 
planis unacum vaginis glabris. Panicula laxa brevi lataque cum aristis 
in circuitu orbiculari-ovoidea ca. 10 cm longa et basi 9 cm lata. Ramis 
paniculae spiculas haud numerosas gerentibus subflexuoso-divaricatis 
(horizontaliter patentibus). Spiculis sine aristis ca. 1 cm longis, glumis 
coloratis membranaceis linearibus glabris valde inaequalibus, longiore 
aristato-acuminata ca. 10—10!/; mm longa altera tantum ca. 51/,—6!/4, mm 
longa, glumella laevi glabra ca. 10 mm longa, aristis cappilaribus ca. 
21,—3 cm longis. 
Queensland: Dry-beef Creek, coll. Leichhardt. 
