158 
Herba paueas uncias alta. Folia demum glabrescentia, 3-8" 
longa, 1-2" lata ; radiealia in petiolum tenuem longumque angus- 
tata; summa apice appendiculam brevem albam scariosam gerentia. 
Glomeruli 1-3" lati.  Involucri generalis capitula vix superantis 
squamz 2" longs v. breviores; ez involucri specialis circiter 
sesquilineam metientes, flores zequantes. Corolle circiter 1" longe. 
Achenium circa 1" metiens. : 
Speciem dieavi in honorem Doctoris J. T. Rudall, medici peri- 
tissimi, viri investigationibus microscopicis meritissimi. 
Cepkalosorus microcephalus. 
Caule eum ramis primum tenuiter lanuginoso demum glabre- 
scente, foliis parvis crassiusculis lineari- v. ovali-oblongis, glo- 
merulis depresso-globosis, phyllis involucri generalis paucis foli- 
aceis plerisque glomerulo brevioribus subovatis v. oblongatis, 
receptaeulo generali depresso, acheniis glanduloso-scabriusculis, 
pappo cyathomorpho paulo lacero v. incqualiter truncato in 
setulas tres breves incquales tenerrimas terminato. 
Ad flumen Murchison. A. Oldfield. 
Herba annua, pluri- v. multicaulis, patentim ramosa, erectiuseula, 
adscendens v. diffusa, pauci- usque pluripolliearis. Folia 14—4" 
longa, leniter eanaliculata, alterna v. inferiora subopposita.  Glo- 
meruli 21—4" lati. Foliola involucri generalis 1-2" longa. Recep- 
taculum tubereulatum, glabrum. ^ Involucri specialis squamz 
enerves, hyalinz, circiter 1" longs, sessiles ; exteriores obovales ; 
interiores oblongo- v. lanceolato-cymbiformes. Corolle 5-dentatz, 
semilinea vix longiores. Achenium 1" longum, fuscum, cylindraceo- 
elavatum. 
Cephalosorus leptocladus. 
Glaber, ramis gracillimis, foliis anguste linearibus, glomerulis 
depresso-globosis, involucri generalis squamis oblongo-linearibus 
glomerulo zquilongis et brevioribus, receptaeulo depresso, acheniis 
glabris, pappo cylindraceo-cyathomorpho vix lobulato. — 
In locis lapidosis flumen Murchison versus. Oldfield. 
Herba annua, spithamza, fastigiatim ramosa. Folia alterna, 
acuta, 1-1" longa. Glomeruli in apice ramulorum solitarii, fere 
hemisphzrici, circiter "lati. Involueri generalis squam:e glabrz, 
1-11" longs, margine áànguste v. angustissime membranes. 
Squam:e involucri specialis imberbes, linea vix longiores, apicem 
versus paulo dilatatz, margine scariose.  Achenium vix ultra 1" 
longum, cylindraceum, fuscum.  Pappus vix 2" longus. 
Huic generi forsan combinandum Piptostemma ( Turez. in Bullet. 
de Moseou, 1850, non Don).  Cyathopappus Cephalosori subgenus 
efformat. "Cephalosorum gymnocephalum v. speciem persimilem 
attulit a fluvio Murchison clar. Aug. Oldfield. 
