51 
Three Desmids new to the United Stales.--In the year of 1875 
there was published a series of various alg^e, and (also many desmids), 
chiefly new species and varieties, from all parts of 'the world, by Paul 
Reinsch at Erlangen (Franconia, Germany.) This work, which was 
dedicated to the eminent algologists Sir W. Archer, O. Norstedt and 
L. Rabenhorst, contains quite a number of desmids, and is entitled 
Contributiones ad Algologiam et Fungologiam, auctore Paulo Fri- 
derico Reinsch. Vol. I. Accedunt tabula CXXXI. Melano- 
phycece: tabulae LXL Rhodophyce^: tabulae LXII. Chlorophyllo- 
phyicese: tabulse XVIIl. Fungi: tabula IX. Lipsise T. O. Weigel. 
MDCCCLXXV. pp. XII. 103. 4to. 
I find three new species of desmids in this work which are not 
enumerated in Wolle's " Desmids of the United States/' and which for 
this reason, can be considered as new to the United States. 
I. Staurastrum Pseudo-Cosmarium, — Semicellul^ a latere late 
ovato-cordatae, margines laterales crenulato serrati; cellulae a vertice 
mm. 
mm. 
tngonse marginibus lateralibus rectis; isthrai latitudo \~\ semi 
cellulse latitudinis. Longit. 0.0786"*™'. Latit. 0.056 
Hab. Pennsylvania, North America. 
Tab. ix., Fig. i a. Specimen a latere. Fig. i b. Specimen a ver- 
lice. p. 91-92. 
2. Xanthidium Nordstedtianum, — Semicellulae a latere late trans- 
verse ovato-truncatae incisura acutangula latiore disjunctae, anguli 
quatuor spinis tenuioribus binis armati, anguli laterales spino singulo 
armati. Longit. 0.053™™-. Latit. 0.0333™°^*. Spin, longit. 0.0112"^- 
Hab. Pennsylvania, North America. Erlangae Franconia, 
A Xanthid, cristato, Breb., differt dimensionibus minoribus, spinis 
tenuioribus in basi non dilatatis, semicellulis longioribus incisura 
acutangula disjunctis. Dimens. XantJu crist,\ longit. 0.0621 
latit. 0.059™"^- (spin, excl.) 
Tab. X. Fig. 6. Specimen a latere, ex massa ex algis unicellularibus 
composita. p. 92. 
3. The work also contains a third species, which is described and 
figured, but not named. It is a 
Cosmarinm spec. — Semicellulae elliptico-ovales in inferiore parte 
se adtingentes margine superiore late rotundato; isthmi latitudo 
triens diametri transversalis, membrana verruculis dense absque 
ordine dispositis exasperata; diameter transversalis diametri longi- 
tudinalis dimidio paulo minus. Longit. 0.0448°^. Latit. o.o25°'"- 
In massa algarum, Easton, Pennsylvania. America borealis. 
A Cosmario Botrytis sat distincta species. 
Tab. X., Fig. 7. Specimen a latere, p. 84. 
I give this species the name Reinschii and will include it in the 
^^st of American desmids as Cosmartum Reinschii, m. 
Kolosvar, Hungary. Jules Schaarschmidt. 
Cleistogamy in Lamium,— Early in March there were brouglrt 
to me some plants of Lamium amplexicaule, L., which, despite the 
earliness of the season, seemed to be on the point of flowering, many 
of the buds showing color. 
Late in April other plants were examined. Still there were no 
