Sentence:  Stems and young branches terete, viscid, densely ferruginous-tomentose with sessile to short-stalked pauciradiate <WSD>stellae</WSD> bearing greatly prolonged 4-6-celled midpoints, these 0.1-0.2 cm long, gland-tipped, strongly armed with ferruginous laterally compressed prickles, these broad-based and sparsely glandular in the basal quarter. 
Meaning of the word marked with <WSD> tags:  (botany) A star-shaped structure.