ROBINSON.— ALOMIA, AGERATUM, AND OXYLOBUS. 441 
Alomia was confused by Gardner with Piqueria and Gymnocoronis, 
but may be readily distinguished by its apically appendaged anthers. 
Orsinia Bert., associated with his Piqueria § Eupiqueria by Gardner 
in Hook. Lond. Jour. Bot. vi. 430 (1847), and with Alomia by Baker 
in Mart. Fl. Bras. vi. pt. 2, 189 (1876), and even by Dalla Torre & 
Harms, Gen. Siph. 526 (1905), is a Clibadium, as was indicated by 
Bentham, Gen. ii. 240 (1873). 
ALOMIA HBK. (Nomen ex 4 privativo et A@ya, margo, de- 
fectionem pappi alludens.) Capitula homogama parva vel mediocra 
saepe numerosa laxe paniculata vel in apicibus ramorum corymbulosa 
20-70-flora; involucri campanulati vel subturbinati squamis vel 
subaequalibus ca. 2-seriatim imbricatis lanceolato-linearibus saepis- 
sime acutis 1—3-costatis firmiusculis vel valde inaequalibus 3-%-seria- 
tim imbricatis tenuioribus striatulis; receptaculo plano vel conico 
nudo vel plus minusve paleifero, paleis saepe angustis. Corollae albae 
vel roseae vel purpureae saepissime extus glandulis subsessilibus 
conspersae rarius in tubo vel limbo hirsutae vel tomentosae rarissime 
glabrae. Antherae oblongae apice appendiculatae basi rotundatae 
haud rarenter vix connatae. Styli rami filiformi-clavellati purpurei 
_ Vel flavi vel aurei rectiusculi vel leviter recurvantes vel per exceptionem 
(Subg. 3) spiraliter recurvati. Achaenia prismatica 5-angularia 
glanduloso-atomifera vel hispidula vel glabra fusca vel nigrescentia 
basi callosa apice annulo cartilagineo vel carnoso integerrimo vel 
angulato conspicuo vel tenuissimo vel omnino obsoleto coronata; 
a nullo.— Nov. Gen. et Spec. iv. 151, 312, t. 354 (1820); Cass. 
By ‘a ee XxVi. 227 (1823); Less. Syn. Comp. 154 (1832); DC. 
“hoa (1836) ; Endl. Gen. 366 (1838); Benth. & Hook. f. Gen. ii. 
(1873); Pfeiff. Nom. i. 116 (1873); Hoffm. in Engl. & Prantl, 
oo Tarissime frutices. Folia ovata vel rhomboidea vel 
Nites ce Shire pleraque serrata vel dentata rarius integriuscula 
Sot Shes e pinnatifida. Inflorescentia corymbosa vel pani- 
esGeeran| ( i Agerati aut T. richogoniae. Species 12 quarum 3 
Maiti u terius inquirenda) insulam chilensem incolens, ceterae 
am centrali-meridionalem habitantes. 
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