LIFE OF OLAF SWARTZ. 391 
rious, though in point of artistical execution, it may stand far 
behind yours. You mention his Sclotheimia (borrowed | 
believe from Bridel), which has not quite satisfied me either. 
That it is my Neckera torta (Fl. Ind. Occ.) is true enough; 
the late Dr Mohr found meanwhile the particularity of this 
moss, which he, ezpressis verbis, speaks about in his excellent 
paper, you must certainly recollect as inserted in the * Annals 
of Botany,’ II. p. 542, and figured the calyptra, capsule and peri- 
stome, in the 14th plate. He explains also (l. c.), the various 
forms of the calyptra, and the distinction between Orthotrichum, 
and his Ulota, from the consideration of this organ. In 1810, 
I likewise sent to Professor Schrader at Gottingen for his 
Journal, (which I supposed to be continued,) complete de- 
scriptions and figures of the Calymperes, and of the Neckera 
torta, whose value as a type for a genus of its own, I had my- 
self been aware of and called it Schizodon, ob dentes vel cilia 
peristomii, nec non calyptram basi fissa. The character I 
formed was “ Peristomium exterius; dentes 16, 2-partibiles 
revoluti ; interius, cilia totidem 2-partita dentibus (32) oppo- 
sita erecta. Calyptra campanulata basi multifida (5—8 fida.)” 
I described two species, the Schizodon tortum (Hypnum tortum, 
Prodr.— Neckera, torta, Fl. Ind. Occ.— Orthotrichum | leve, 
(not breve) Palis. de Beauvois /Ethéog. p. 80, and Encalypta 
ramosa, var. rufescens, Bridel.) M. Bory de St Vincent has 
also found this species in the Isle de Bourbon. If you should 
like to have the description at large, I will send the same. 
* The second species is Schizodon acuminatum, (the Orthotri- 
chum angulosum, Palis. ZEthéog.) of which I had a small speci- 
men, but complete enough to convince me of its true affinity. 
* Among several Mosses that I have seen, in habit some- 
what similar to the above, I never observed such a form of 
_ the calyptra nor of the peristome, but they appeared to me to 
belong (on account of the calyptra) to the Ulota of Mohr; 
to which, according to that author's and my own observation, 
the Encalypta crispata, H., the Grimmia parasitica, (Encalypta, 
— Fl. Ind.) Grimmia Daviesii, Orthotrichum coarctatum, Palis, 
O. crispum, H. O, curvifolium, Wahlenb.,. Weissia uncinata, — 
