foliage; D. quadrilatera has leaves which look more like objects prepared to puzzle a geometrician than any thing already known in the vegetable kingdom.
Of Acacia numerous species occur, among which are A. alata and pulchella, both varying with smooth and hispid foliage; the greater part of the species are peculiar to the Colony. A. diptera62 is a singular slender leafless plant, with the branchlets two-winged, glaucous, and bordered with a strong edge; A. squamata63 has the tips of the phyllodia curved like a bird's head, and its flowers appear to be brown; A. extensa64 is a graceful plant, with racemes 6–9 inches long, composed of alternate capitules, and slender angular falcate phyllodia; finally, A. auronitens65 is a most beautiful stiff spiny bush, with flowers of the deepest yellow; like others it varies from being quite smooth to being covered with rough hairs.
There is one species of the beautiful genus Lalage,68 and two of Labichea,69 both of which are peculiar to the Colony.
(62) Acacia diptera; ramis foliaceis angustis bialatis glaucis marginatis foliorum loco in lobis falcatis apice mucronatis inflexis productis, stipulis nullis, pedunculis monocephalis racemosisque ancipitibus, capitulis pedunculatis.
(63) Acacia squamata; ramis phyllodiisque rectis apice recurvis eglandulosis acutis teretibus glabris, stipulis nullis, capitulis geminatis ternisve pedunculatis e squamis imbricatis deciduis erumpentibus, filamentis discoloribus!
(64) Acacia extensa; ramis glabris subtetragonis angulis incrassatis asperis, phyllodiis longissimis falcatis teretibus angulatis apice obliquè mucronatis infra medium glandulosis, racemis, erectis longissimis angulatis, pedicellis alternis æquidistantibus ascendentibus monocephalis, filamentis discoloribus.
(65) Acacia auronitens; ramis teretibus glabratis hirsutisque, phyllodiis lincari-oblongis acinaciformibus marginatis apice spinosis unicostatis sæpius in medio margine superiore glandulosis, stipulis spinosis, capitulis solitariis, pedunculis phyllodio longioribus.—Formæ 2 adsunt quarum altera glabrata capitulis longiùs pedunculatis, altera hirsuta phyllodis angustioribus, pedunculis brevioribus, filamentis minus intensè aureis.
(66) Acacia oncinophylla; ramis angulatis, phyllodis longissimis linearibus duris terstriatis basi angustatis apice retrorsùm hamatis supra basin glandulosis, stipulis nullis, spicis amentiformibus geminatis phyllodiis multò brevioribus.
(67) Acacia Drummondii; sericea, inermis, foliis bipinnatis, pinnis bijngis, foliolis 2–3-jugis oblongo-linearibus obtusis, petiolis acutis marginatis eglandulosis, spicis axillaribus cernuis simplicibus pedunculatis foliis longioribus.
(68) Lalage hoveæfolia; laxe pubescens, foliis oblongis lanceolatisve mucronulatis basi subcordatis, bracteis ovato-lanceolatis sericeis, calycis laciniis supremis vix ad medium connatis. (Benth. mss.)
(69) Labichea punctata; suffruticosa, foliis simplicibus oblongo-ellipticis utrinque angustatis mucronatis, utrinque punctatis subtus leviter puberulis, racemis folio brevioribus, anthera utraque obtusa biporosa, ovario sericeo-villoso.—Rami apice compressi. (Benth. mss.)
