217 
SHORT NOTES. 
CanamintHa Acrnos Clairville —For “rhe abe I have been 
of the opinion that this plant is not the s C. arvensis 
England. I have not yet seen the original descriptions, and 
admit that papas eee the two are very similar, except that 
the flowers and calyx of C. arvensis are smaller, and the plant is 
usually annual er hence less shrubby. But I qabanis this pre- 
liminary note in order that field botanists may keep a look-out. 
hat I know as C. Acinos is already (May 18th) in blossom on 
some of the Wieser etek limestone cliffs and rocks about Bristol; 
and so it was in May, 1888-9, and again in May, , on the 
same rocks (I have voucher specimens). Hooker (Student's Flora) 
gives July-August; Schinz and Keller (Flore de la Suisse) say 
June-August. My only British specimen of what I call C. arvens 
was gathered by T. A. Sprague in a chalky field near Guildford 
except on limestone cliffs and pee about Bristol and in Somerset. 
I have no orn iptive ‘“ Flora which limestone or other cliffs 
and rocks are given as a habitat, Several of the French and 
Swiss authors give “dry fields and stony places,” or “dry and 
arid places.”’ patricia eg ‘In waste places, or more pire 
s a weed of cultivat He evidently recogniz rms 
for Ws says (Handbook of  Biitiah Flora), ‘‘ Corolla in the htaticerae 
variety but little longer than the calyx, although occasionally near 
boa as long.” But Bentham calls it annual; so do Gillet et 
Magne (Flore Frangatse). Most authors describe it as.‘ annua 
or biennial,’”’ but Schinz and Keller, who call it Satureia Acinos 
(L.) Scheele, say ‘“exceptionneliement trisannuelle.” It was 
placed by Linnzeus under Thymus, and alas! by O. Kuntze under 
Clinopodium. On the cliffs near Clifton it is certainly not annual, 
and the rootstock of even small Saag is so woody that I believe 
many live at least several yea Mr. Bucknall has kindly 
shown me Spanish and nat sashes coated with a _ 
tomentum, and named e also has a speci 
of 
C. pseudacinos Lacaita ee "EL Princip. Citra, 1911, p “51) na 
Salerno, near Naples. This has the longer flowers of the Bristol 
plant, but the ee are much narrower and more erect.— 
H. Sruarr THompson. 
TORTULA ATROVIRENS Var. EDENTULA (B. & 8.).—The authors 
don 
of the Bry. Europa under Desmatodon nervosus described and 
figured a “ var. B edentulus, opercu ico breviusculo, peristomio 
solam mem ilarem sistente.” No locality is given, but 
the note follows :—" La var. 8 se rencon eh gre br fois mélangée 
& la forme ordinaire, mais en général parait propre aux 
