# Edwards's Botanical Register/Appendix to the first twenty-three volumes/A sketch of the vegetation of the Swan River Colony/Rutaceae

Rutaceæ
The plants of this order are very different here from what they are upon the East and South-east coasts. There are no Correas, or Phebaliums; Crowea, Philotheca, and Zieria seem unknown; and of the other eastern genera, Boronia and Eriostemon, there are only a few species of little moment; the most remarkable among which are B. spathulata,$^{73}$ an upright simple shrub, with distant glaucous obovate leaves, and terminal pretty pink flowers; B. viminea,$^{74}$ a near little branched shrub with very narrow leaves, and red axillary flowers; and Eriostemum ? nodiflorum,$^{77}$ whose blue flowers are collected in compact heads, beyond which extend the young branches, covered with heath-like leaves. There are however three genera peculiar to the Colony, one of which is Diplopeltis Dampieri, introduced to our gardens by Baron Hugel, a grey shrub, with long pink stamens and the flowers arranged in nodding heads; the second is Chorilæna quercifolia, a singular plant, with a broad sinuated foliage clothed with stellate hairs, and greenish white flowers of no beauty, but also capitate; the third is a genus allied to Boronia, but having blue flowers, and differing from that genus in the filaments being destitue of a glandular thickening at their junction with the anther. To this genus the
$^{(73)}$ Boronia spathulata; glauca, ramis strictis simplicibus, foliis simplicibus distantibus obovatis integerrimis apiculatis, cymis terminalibus 3-floris pedunculatis, filamentis basi pilosis.
$^{(74)}$ Boronia viminea; ramis dichotomis tenuibus flexuosis,foliis linearibus obtusis planis basi angustatis internodiis paulo longioribus, floribus solitariis axillaribus breviter pedunculatis, filamentis villosissimis.
$^{(75)}$ Boronia teretifolia; glabra, foliis simplicibus teretibus obtusis basi dilatatis hinc sulcatis, cymis multifloris longè pedunculatis, filamentis hispidis.—Folia revera plana convoluta.
$^{(76)}$ Boronia scabra; foliis simplicibus lineari-oblongis obtusis margine revolutis ramisque hispido-pilosis, floribus solitariis terminalibus, sepalis subulatis hispidis, filamentis glabris.—Flowers very small, red.
$^{(77)}$ Eriostemum ? nodiflorum; ramulis pubescentibus, foliis linearibus obtusiusculis glandulosis glabris erectis, floribus lateralibus capitatis, bracteis linearibus margine villosis, calycibus pilosis, filamentis villosis, ovarii lobis inæqualibus cornutis.
​name of Cyanothamnus may be given;$^{78}$ one of the species is a branching shrub, the other a simple stemmed, apparently annual, plant.
$^{(78)}$ Cyanothamnis. Sepala 4. Petala 4. Stamina 8, filamentis membranaceis subulatis; antheræ appendice ipsis æquali auctæ. Ovarium simplex. Capsula 4-partita: loculis 2-valvibus monospermis.—Folia simplicia et pinnata. Flores cœrulei.
Cyanothamnus ramosus; caule fruticoso ramoso, foliis filiformibus biternatis, floribus axillaribus solitariis, petalis demum involutis recurvis persistentibus, filamentis ciliatis apice pubescentibus, antheræ appendice erectâ planâ.
Cyanothamnus tenuis; annua?, foliis simplicibus filiformibus internodiis sæpe brevioribus, floribus solitariis axillaribus, petalis demum erectis imbricatis, filamentis ciliatis apice glanduloso-punctatis, antheræ appendice ventricosa oblonga reflexâ.