4 II. Karel Domin: 



cies. The new P. glabriflora dif f ers f rom' the other two spe- 

 cies not only with its absolute glabrity but also in the com- 

 position of its inflorescence. In its leaves it is near to 

 P. scahriuscula, but they are entirely glabrous. Of course 

 the pubescence of the leaves is no constant character in 

 this group, as is shown by the forms of P. ericifolia 

 with glabrous or glandular-scabrous leaves. The flower- 

 heads of the true P. ericifolia present a distinct invo- 

 lucre of dosely imbricate very glutinous and broadened 

 bracts, whereas in P. glabriflora the inflorescence presents 

 a shortened dense spike which ís not surrounded by any in- 

 volucre. The whole style is entirely glabrous; the young 

 shoots háve sof 1 ty pubescent leaves, but the hair soon disap- 

 pears and the leaves become entirely glabrous and smooth. 



8. P. ericifolia R. Br. Prot Nov. 5 (1830), Meissn. in 

 PÍ. Preiss. 1.494 (1844— 45), in DC. Prodr. XIV. 267 (1856), 

 Benth. F1. Austr. V. 331 (1870) excl. var., Diels u. Pritzel 

 in Engl. Bot. Jahrb. XXXV. 133 (1904). 



W. A.: The leaves are either, with the exception of 

 small scabrous dots, glabrous or entirely glabrous (f. sub- 

 glabra. Slab Hut Cruk to Cranbrook, A. A. Dorrien-Smith), 

 sometimes, however, having besides the glandular dots also 

 a short pubescence (f. subpubescens, f. i. in District Avon, 

 E. Pritzel, PÍ. Austr. occid. No. 476 (1901). 



2. Isopo^on R. Br. 



1. I. latifolius R. Br. Prot. Nov. 8 (1830), Meissn. in 

 DC. Prodr. XIV. 282 (1856) excl. var., Benth. F1. Austr. V. 

 338 (1870), F. v. Muell. First Census 65 (1882), Sec. Census 

 112 (1883). 



7. Prótea Meissn. in DC. Prodr. XIV. 283 (1856), F. v. 

 Muell. Fragm. VI. 237 (1868). 



W. A.: Warrunup Hill, Stirling Range, A. A. Dorrien- 

 Smith. 



2. I. cuneatus R. Br. in Trans. Linn. Soc. X. 73 (1810), 

 Prodr. 366 (1810), Meissn. in DC. Prodr. XIV. 283 (1856), 

 Benth. F1. Austr. V. 339 (1870), F. v. Muell. First Ceusus 

 65 (1882), Sec. Census 112 (1889). 



7. Londoni Baxt. ex R. Br. Prot. Nov. 8 (1830), Meissn. 



