46 SÉANCE DU 25 JANVIER 1918. 
Osmitopsis calva Gdgr. — Ab A. astericoide Cass. differt glabritie, 
foliis duplo longioribus apice denticulatis dense imbricatis, capitalis 
sessilibus ipsis foliis occultatis, involucri glabrescentis phyllis acutis, 
ligulis brevioribus. 
Has. : Cap, Caledon ad Houhoek (Penther n. 4 449!) 
Frutex rigidus, rami hirsuti, folia glabra punctata lineari-lanceolata 
basi dilatata. 
Obelisearia hispidula Gdgr. — Annua, fere tota pilis patulis tuber- 
culo 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 ovatæ ad apicem emargi- 
nato. 
HAB. : America bor., New Mexico Lincoln in White Mountains, 
alt. 6 700 ped. ( Wooton n. 2611) | 
Differt ab O. columnarem Sims indumento strigoso copioso et foliis 
multo minus sectis. 
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 lzevigata Gdgr. 
1. ( 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. 
Amb: affine P. acuminatz R. Br. Caulis pedalis rigidus uniflorus, capi- 
tulis magnis argenteis valde squamosis conspicua. 
Folia superne glabra viridia eorum lobi breviter spinosi, invo- 
lucri phylla glabrescentia abrupte spinosa. — Cap, ad Gamtoos 
i River (Schlechter n. 60481).... Platycarpha calvescens Gdgr. 
Folia superne araneoso-canescentia eorum lobi longe spinosi, 
involucri phylla lanuginosa in spinam longam paulatim pro- 
ducta. — Cap (Ecklon et Zeyher!). Platyearpha Ecklonis Gdgr. 
Affinis P. glomeratæ Less. — Herbæ annu: facie Cardui vel Cirsii; 
radix crassa in speciminibus citatis tuberosa, folia pinnatisecta discoloria 
spinosissima. 
Copiose glanduloso-hirta, folia linearia elongata, phylla invo- 
lucri hirta nervosa. — Mexico, ad Agangues (Schiede!). 
1. Sehkuhuria Schiedei Gdgr- 
Glabrescens, folia linearia brevia, phylla involucri glabra parum 
nervosa. — Mexico, Valley of Mexico, alt. 7300 ped. (Pringle 
n. 79281)................... Schkuhuria glabrescens Gdgr- 
Utraque affines S. virgatæ DC. 
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- 
floris, capitulis majoribus 7-10-flosculosis. 
