FLORA OK ri!K SHASTA FORM A TlON. 2:)J.» 



(lii-(>('lic)ii thoy diverge and fork dicliotomously at lonfi inlenals. lliis fofk- 

 iiiil not diminishing \hv\v size. Tliis nofvation is much like (liat of Haus- 

 mannia, l)Vit the forking lakes place at short(M' int(>rvals than in Dunker's 

 species. The secondary nerxation is \'eiy <)l)scur(\ and all n(>i-vation of 

 lesser rank is not shown. The sccondai'v nci'Ncs, which ai'e occasionalU' 

 \aguely shown, appeal' to stand nearly at I'ight anglers with the priniai'N' 

 ones. The surface of the fragment of the Ic.-if is graindated as if fidin sori 

 scattered ovei' it. The dcMails of the.sc could not ]tc made out. This 

 granulation, if caused liy sori. together with {\\r |>riinai'y ner\-es, suggests 

 an aitinity with llausniaimia, hut the (I'ue place of the plant is nimt 

 prohlemalic. 



Family M.\1!.\TT1.\(1'LE. 

 Cicnus A.XdlOl'TKI^IDll M S,liiin|.cr. 



A.NlWOl'I'KIMDnM (A.NMOKIONSK DaWSOll. i 



I'l. LXVl, Fios. 1-4. 



l.Sl)2. AngiopiiruHum anuriorcnsi lh\.: Trans, Roy. Soc. Caiiiula, Sect. lY, ^'^ll. X, 



p. 83, fig. 2 on p. s;-!. 

 1S'.)4. Angiopferidium nervosum Font. ^ in Dillc]- iV^: Sijinlon: Hull. (icol. .Soc. .\ni., 



Vol. V. p. 4.50. (PL LXVI, Fig. 4.) 

 1S!)1. AiiffiopfcrldiuDi canini)rt nsi Dn.? Font, in Dillci- l^ Shmton: hoc. cil. 



(PI. LXVI, Fig. L) 

 ISDo [1896]. Anglo pteridium nervosum Font . ^ in Stiinloii: Hull. U. S. Ciool. Surv., 



No. i:?3, p. 15. (PI. LXVL Fig. 4.) 

 ISil.") (IS'.Ki]. Angiopferidium canmorenne Dn. ? i^'onl. inStanlon: \aw. cit. (I'l. 



LXVL Fig. 1.) 



Sir William Dawson" has described from (■anmore, in the Cascade 

 coal basin of the Kocky Mountains, a fern that is much like a plant found 

 in several specimens at some of the Califoi'iiia localities. As, however, 

 the specimens from Califoi-nia are all in the form of detached pinnules, 

 which in eveiy case are in fragments, the matei'ial does not suffice for 

 positive identification. The California plant, however, shows several of 

 the characteristic features of Angioptcriiliiini c<inin()r<')isc. The pimuil(\s 

 ha\(> the same narrow form, rigid aspect, and comparatively veiy stout 

 midrib prolonged to the ends of the pinnules. The lateral nervation is 



« Currvliitiiiii i>f Knrly Crolari'iiiis S()<'ci('s, p. ,S;{, (ij;. 2. 



