132 L, Diels u. E. Pritzel. 
Petrophila media R. Br. var. 
In regionibus et interioribus et magis borealibus folia rigidiora, breviora, 
saepe patentia nec non flores multo minores, breviores, pallidiores exhibet. 
Quibus rebus autem multis formis transeuntibus connexis varietatem distine- 
tam proponere difficile est. Qualia specimina nobis adsunt haec: 
Ex distr. Avon pr. Tammin in arenosis fruticulosis flor. m. Oct. 
(D. 6100); ex distr. Irwin a Northampton septentrionem versus in arenosis 
aridis fruticulosis deflor. m. Nov. (D. 5654); inter flum. Murchison Riv. el 
sinum Sharks Bay (F. v. Mürzer in hb. Melbourne!) 
Petrophila acieularis R. Br. (B. V. 323). 
Jam statu juvenili anni primi florere videtur. Qualia specimina a cl. 
Meissner primum distincta [»caulis nunc simplieissimus, penna corvina vix 
crassior, apice monocephalus, foliis tenuibus brevioribus (2—3-pollicaribus)« 
Pl. Preiss. I. 494] in arenosis humidis subhumosis una cum Cephaloto, 
Restionaceis etc. nonnunquam inveniuntur (D. 2190). 
Petrophila megalostegia F. v. M. (Fragm. X. 61). 
Stirps pulchra a Daummonvıo loco ignoto detecta nunc aliquoties reperta 
in distr. Irwin pr. Mingenew in glareoso-arenosis fruticulosis flor. m. Sept. 
(D. 6053); pr. Greenough Riv. juxta pontem Mullewensem locis simillimis 
flor. m. Sept. (D. 4189). 
Petrophila linearis R. Br. (B. V. 323). 
Fruticulus speciosissimus 25—75 cm alt., foliis glauco-viridibus, perian- 
thio roseo, stigmate scarlatino pilis flavis ornato praeditus in silvis apertis 
arenosis litoris occidentalis usque ad riv. Moore Riv. pervulgatus 
(nec non cireum urbem Perth communis) m. Oct. et Nov. floret. 
Petrophila biloba R. Br. (B. V. 324). 
Ab autoribus nondum perspecta amplius cum P. propinqua R. Br. d 
P. squamata R. Br. confusa est. Ab utraque differt statura procera 
(1—2 m alt.), caule stricto minus ramoso, perianthio roseo (non sulphureo) 
pilis albis vestito. Stigma aurantiacum. 
Hab. in distr. Darling in collibus exterioribus montium Darling-Range 
pr. flum. Swan Riv. in calculosis sublimosis praecipue inter rupes grani- 
ticas flor. m. Sept. (E. Parrzgt Pl. Austr. occ. 508!, D. 4086) fruct. m. Febr. 
(D. 2145). EE 
Petrophila divaricata R. Br. (B. V. 326). 
Frutex glaucescens per districtus australes pervulgatus septentrionem 
versus trans Moore Riv. progreditur. Vidimus in collibus glareosis prope 
Mogumber m. Aug. flor. (D. £023). 
Petrophila serruriae R. Br. (B. V. 327). . 
Quae species rigida loeis siccis non infrequens, cum saepius lutei- 
flora observetur, in calcareis litoralibus occidentalibus perianthium roseum 
exhibet, eodem modo, quo P. media supra commemorata (p. 434) erat 
notabilis. 
