46 
SÉANCE DU 25 JANVIER 1918. 
Osmitopsis calva Gdgr. — Ab A. astericoide Cass, difîert glabritie, 
foliis duplo longioribus apice denticulatis dense imbricatis, capitalis 
sessilibus ipsis foliis occultatis, involucri glabrescentis phyllis acutis, 
ligulis brevioribus. 
Hab. : Gap, Galedon ad Houhoek ( Penther n. 1 449!) 
Frutex rigidus, rami hirsuti, folia glabra punctata lineari-lanceolata 
basi dilatata. 
Obeliscaria hispidula Gdgr. — Annua, fere tota pilis patulis tuber- 
eulo insitis obsita, caules rigidi striati apice recte ramosi, folia 1-2-juga 
pinnata, pinnis setosis lineari-lanceolatis, pedunculi longissimi nudi 
profunde sulcati, sepala linearia, ligulæ ample ovatœ ad apicem emargi- 
natæ. 
Hab. : America bor., New Mexico Lincoln in White Mountains, 
ait. 6 700 ped. ( Wooton n. 261 !) 
Differt ab O. columnarem Sims indumento strigoso copioso et foliis 
multo minus sectis. 
I Glaberrima, folia glaucescentia linearia, phylla involucri obtusa 
albida flosculis multo breviora, pappus niveus. — Australia, 
Victoria ad Wimmera (Reader!), Keilor Plains (Walter!) et 
Mentone (Tovey !) . Podolepis lævigata Gdgr. 
Inferne copiose aspero-hirta pilis papillosis, folia viridia late 
linearia, phylla involucri lanceolata pallide fuscaflosculas 
longe superantia, pappus lutescens. — Australia, N. S. Wales 
ad Warrumbungle Range (Forsyth!), Victoria {Walter!). 
Podolepis papillosa Gdgr. 
Ambæ affine P. acuminatæ R. Br. Gaulis pedalis rigidus uniflonis, capi- 
tulis magnis argenteis valde squamosis conspicuæ. 
Î Folia superne glabra viridia eorum-lobi breviter spinosi, invo¬ 
lucri phylla glabrescentia abrupte spinosa. — Cap, ad Gamtoos 
River (Schlechter n. 6 048!)_ Platycarpha ealvescens Gdgr. 
Folia superne araneoso-canescentia eorum lobi longe spinosi, 
involucri phylla lanuginosa in spinam longam paulatim pro- 
ducta. — Gap (Ecklon et Zeyher!). Platycarpha Ecklonis Gdgr. 
Affinis P. glomeratæ Less. — Herbæ annuæ facie Cardui vel Girsii; 
radix crassa in speciminibus citatis tuberosa, folia pinnatisecta discoloria 
spinosissima. 
Copiose glanduloso-liirta, folia linearia elongata, phylla invo¬ 
lucri hirta nervosa. — Mexico, ad Agangues (Schiede!). 
Sehkuhuria Sehiedei Gdgr. 
Glabrescens, folia linearia brévia, phylla involucri glabra parum 
nervosa. — Mexico, Valley of Mexico, ait. 7 300 ped. (Pringle 
n. 7 9281)... Sehkuhuria glabrescens Gdgr. 
Utraque affines S. virgatæ DG. 
Senecio durbanensis Gdgr. —Differt a S. deltoideo Less. pube tenuis- 
sima, caulibus magis angulosis, foliis amplioribus basi cordatis apice 
breviter acutis ciliolatis serratis nec lobulatis, cymis densifloris et multi- 
lloris, capitulis majoribus 7-10-flosculosis. 
