414 
Floristik, Geographie, Systematik etc. 
lowing new names occur: G. amoena f. pygmaea, G. amoena v. 
albicaidis, G. amoena f. Huntiana, G. amoena v. Lindleyi (Oenothera 
Lindleyi Dougl.), G. Blaisdalei, G. Bottae v. usitata, G. Bottae v. 
cyLindrica, G. deflexa, G. Dudleyana f. Brandegeae, G. arcuata ( Oeno¬ 
thera arcuata Keil.), G. Hansenii, G. viminea v . Congdonii , G. viminea 
v. incerta, G. viminea v. margaritae, G. parvißora ( Oenothera vimi¬ 
nea parviflora Hook. & Arn.), G. quadrivulnera v. apiculata , G\ gwa- 
drivulnera v. vacensiSj G. quadrivulnera v. Daryi, G. quadrivulnera 
f. ßagelata, G. quadrivulnera f. Setchelliana, G. quadrivulnera v. 
Hallii, G. quadrivulnera v. rubrissima, G. Goddardii , G. Goddardii v. 
mignelita, G. Goddardii f. capitata, G. pur purea v. Elmeri, G.puvpurea 
v. procera, G. purpurea v. lacunosa, and G. sparsifolia. Trelease. 
Negri, G., Sülle forme piemontesi del genere „ Ephedra L.”. 
(Atti Accad. Scienze di Torino. Vol. XLII. p. 14. 1904.) 
Apres avoir brievement fait l’historique de la distribution geo- 
graphique du genre Ephedra dans les Alpes du Piemont (Vallees 
d’Aoste et de Suse), M. Negri examine l’opinion des auteurs au 
sujet des caracteres systematiques de ce genre en se rangeant ä 
celle de Meyer (1849) d’apres laquelle le caractere le plus impor¬ 
tant et essentiel est la forme du tubillus. II constate que d’apres le 
riche materiel qu’il a examine, Ephedra distachya L. ne se rencontre 
que dans une seule Station („Le Forche” pres Aoste), tandis que 
1’ Ephedra helvetica Mey. se rencontre ä la „Brunetta” pres Suse, 
et sa forme gracilis sur les rochers de „Ploüt” pres „Montjovet” 
(Vallee d’Aoste) et au „Monpantero” pres Suse. II interprete ces 
colonies d 'Ephedra comme etant des survivants de la periode xero- 
thermique, et d’apres la rarete de VE. distachya par rapport au E. 
helvetica et d’apres la distribution des ces deux Ephedra , il incline 
ä interpreter VE. helvetica comme etant une forme neogene issue* 
de VE. distachya. R. Pampanini. 
Parish, S. B„ A contribution toward a knowledge of the 
genus Washingtonia. (Bot. Gazette. XLIV. p. 408—434. f. 1—12. 
Dec. 1907.) 
A historic account of the genus, with full bibliography. A key 
differentiates W.filifera, with two varieties, W. gracilis and W. sonorae, 
“Wendland’s Washingtonia robusta, long considered an obscure if 
not, indeed, a mythical tree, is in reality the one with which we 
have the füllest acquintance. The type source of W.filifera is unknown, 
the native home of W. gracilis remains unvisited, the haunts of W. 
sonorae seldom have been penetrated, but many botanists have 
stood beneath the groves of the desert W. robusta, and it has long 
been in cultivation in Southern California.” 
The new names introduced are: W. filifera robusta Parish (W. 
robusta Wendl.), W.filifera microsperma Beccari, and W. gracilis Parish. 
Trelease. 
Sargent, C. S., Crataegus in Southern Michigan. (Rept. Mich. 
State Bd. of Geological Survey for 1906. p. 509-570. 1907.) 
A short historical Statement is followed by a key to the groups 
of species, and this by group-keys and details as to the species. 
The following new names occur: C. Farwelli, C. nitidula, C. com- 
pacta, C. incerta, C. perampla , C. horridida, C. parvula, C. allecta, 
C. meritaj C. perlaeta, C. taetrica, C. asperata, C. nutans, C. mollipes. 
