Conthibutiones Flokae Austkaliae Occidentalts XU. 
77 
of the great traffic route which formerly extended from. Antarctica to Europe 
by way of Australia and Persia, witli India and the Mediterranea.n as inter- 
mediate points. If such is the cast', then PUosiijles should be looked for in 
Eastt'i’ii Australia. The fact that it has only no^v been tliscoveretl in South 
^Vestern Australia, and so close to the Metropolis, indicates how little known 
the Australian flora is today, and further, the species M'hicli is only in evidence 
when in flower (and perhaps also in fruit) may easily be mistaken for some 
monstrosity, such as a gall-flower. 
Pilostyles Hamiltonii C. A, (Jardn. sp. nov. 
Alabastra 2 mm. diam., ov’oideo-glol)osa, solit.aria, e cortices irn'gulariter 
enunpentia, saepo numei'osa. Flores carnosi, exteriiis atro-purpurt'i, intus 
roseo-sanguinc'i. Bracteae phu’es. fere 1)-11. Ihseriatat?, iinbricatae, t'xteriores 
ovatae vel ovato-orbieulatae, obtusae, minore.s longitudine medio perianthii, 
interiort'S (fere 5) oblongae vel ovato-oblongae, obtusae. concavae, integrae 
vel eroso-laceratae. l^erianthii segmenta 4 -6, soluta, imbricata, ad basin 
attenuata vel constricta, oblonga vel oblongo-s[>athulata, Integra, obtusa, 
et sicut bracteae tenuiter striata.. Discus epigynus carnosus, sub-verticalis. 
Columna in floribus masculis cylimlrica, fere ecgialis iieriantliio vel rare longior, 
apice incrassata ('t alto couvexa vd capilata, tubulata et b?'(‘viter bilobata, 
margine finibrio-papillosa minutis papillis ; antiierae num(‘rosa(‘, submargine 
dense biseriata<s uniloeulares, poris terrninalilnis apei’ii'utes, demum evanes- 
ccntes ita u1. raro inaturae videri possint. Ovarium in floribus feminis ovoideum 
vel ov’oideo-t^ylindricum, si'ini-inferum v<’] superum. nuiloculare ; discus 
carnosus, parvus, cum ovario et stigma pins minusv'o coiitinuus ; stigma alte 
convexa sou capitata, sine additamenta ; ovula numerosa, utrimpie in 
])arietibus placc'utaf' ; placentae primnm distinctae, demiim ])andontes, et 
tunc ovula undique in ovarium sparsa. Fructus ignotus. 
Habitat in distr. Darling dicto ]n'ope flumen Helena in page IMuiidaring 
Weir, parasitica iii caulibus et ramis plantat' Dn^vlesia jje<'//lnata : fl. meiise 
Martio. C. 1). Hdmilion, Martins 1946. (Typus in Herbario kertheuse). 
Haec plauta est memoratu digna non solum (piia est unica species huius 
subgeneris (EivpilostyleH) extra Americam, sed etiam ob angustam et tiibu- 
latam partem genitalium in maseulo, et ob segmenta perianthii cum basibus 
angustis et cpiasi-ungulatis in floribus amborum sexuum. Haec est prima 
species in Australia inventa, et inventa fuit parasitica in quodam genere 
Poddlyriearuiri. 
Haec planta vocata fuit in honorem Caroli Donaldi Hamilton cuius 
sapientibus observationibus ego in notitiam ])lantae veni. Xomen etiam 
pracstat avo suo mortuo, A. G. Hamilton, (pii suis operibus, notatu dignis, 
scientiae plantarum Australiae contulit. 
ROYCEA. 
Roycea C. A. Qardtu gen. nov. (Chenop<jdiaceae-Clienopodioideae). 
Flores dioici, ebracteati et cbractoolati, profimdo 4-5didi, tubus brovitor 
turbinatus, segmenta perianthii imbricata, aequalia vt'l levitor inaecpialia, 
ovata vel obovata (rarius orbicularis), concava- obtusa, margiiiibus membrau* 
