68 Austrobaileya 8(1): 65-68 (2009) 
The key to species in Australia as presented in Holland (2002) is amended after couplet 19 by 
inserting: 
19a Stipules in unequal pairs, one much larger than the other; calyx 5-7.5 
mm long and calyx lobes subequal and more than twice the calyx tube 
.C. inaequalis 
19a. Stipules similar to each other; calyx either more than 7 mm long or 
if shorter, then calyx lobes unequal or lobes less than twice the length of 
the calyx tube.20 
Conservation status : This species occurs 
in the northern Claraville Plains province 
of the Gulf Plains bioregion, between 18°1T 
and 19°30'S and 141°17' and 143°05'E, with 
an extent of occurrence of about 1000 km 2 . 
It has recently been located in reasonable 
numbers in the Croydon area and appears to 
respond positively to disturbance either from 
fire or flood, and in some areas, to mechanical 
slashing or light grading (K.R.McDonald, 
pers. comm. May 2009). There are no identified 
threats to the species. A conservation status 
of least concern is therefore recommended. 
Etymology : This species is named for the 
unequal stipule pairs that are the distinguishing 
feature. 
Acknowledgements 
I thank Keith McDonald (Department of 
Environment and Resource Management) for 
collecting plant material, habitat information 
and comments, Roger Polhill (Royal Botanic 
Gardens, Kew) for his search of the overseas 
material in determining the status of the 
species, Peter Bostock for the Latin diagnosis 
and Will Smith for the illustrations. 
References 
Everist, S.L. (1981). Poisonous Plants of Australia. 
Revised Edition. Angus & Robertson 
Publishers: Australia. 
Holland, A.E. (2002). A review of Crotalaria L. 
(Fabaceae: Crotalarieae) in Australia. 
Austrobaileya 6: 293-324. 
Map 1 . Distribution of Crotalaria inaequalis 
