58 Contributions from the Gray Herbarium 
ONOSMA CINEREUM Schreb., var. stellulatum age & tat Py 
comb. wes O. stellulatum Waldst . & Kit. Pl. rar. Hung. ii 
(1805); Coste, FI. ae Ny 590 (1903); Brand, Koch’ s Syn. Beuise. 
u. Schweiz. FI. iii. 1995 (1907). O. helveticum Boiss. Di iagn. Ser 
x1. 111 (1849). - ; chi loides L., var. stellulatum (Schreb.) Fiori As 
Fiori & Paoletti, Fl. It. ii. 364 (1902). 
O. cinereum Schreb. Nov. Act. Nat. Cur. iii. 474 (1767) is the 
earliest designation for this variable and much-named species. For 
a nearly complete synonomy see Boissier, Fl. Orient. iv. 201-20: 
(1875). Boissier, apparently overlooking Schreber’s name, main- 
tained in specific rank O. stellulatum Waldst. & Kit., the form with 
green often plane leaves and spreading pubescence, and treated as 
varieties of it the plants with more or less cinereous narrow leaves 
with revolute margins. However, since cinereum is the older speci- 
fic name, it must be retained for the species. Fiori (1. c.) treats 
both O. cinereum and O. stellulatum as varieties of O. echioides and 
Brand (1. c.) writes ‘‘ Die . . . Arten sind schwer zu unterscheiden 
und nicht scharf abgegrenzt. Médglicherweise sind es nur Formen 
einer einzigen Art.’ Undoubtedly the species tend to merge 
through the variety stellulatum but in general they are distinct 
enough so that it seems conducive to clearness to keep both species 
as Boissier, Girke, Brand, and others have done. In my opinion, 
however, Fiori is right in his treatment of the several segregates of 
O. echioides that have been proposed, since they all agree with it in 
having the tuberculate bases of the hairs glabrous. But O. cinereum 
and its relatives are typically well-marked by the stellate-pubescent 
tuberculate bases of the hairs. Fiori’s diagnoses of the typical form 
and the var. stellulatum are good. 
