1887. | BOTANICAL GAZETTE. 203 
to fructification in several cases. The most successful experiments were 
conducted at high altitudesin the Alps and Pyrenees. Heretofore one of 
at thev used gonidia and fungus hyphe, But in the successful experi- 
ments of Bonnier the alga used was a Protococcus or Pleurococcus, while 
those in ee eee were used under the same conditions faile 
Mr. ardener’s Chronicle (June 11), describes a bi- 
generic by brid bietyisiin ‘Colak (Lycaste) jugosus as male and Zygopetalum 
crinitum as female. e gives it a new generic name, Ceante ing the 
it with natural genera, but considers these hybrids as artificial produc- 
i be tr 
should be dignified with new generic names of any kind, as Eo a 
have not yet grown out of the notion that crossing genera a 
considered distinct. It is still an open question how far the skillful. ce 
ace ot Sey ada eau affect £ we sean ae of ate enera. 
e same writer, in aper before the Linnean jet “ Bigeneric 
Orchid Hybrids,’ presents the following comeliadain with regard to orchid 
hybrids: (1) Hybridization may take place, not only between distinct 
species, but also between se oe nct genera, ses be sb n plants so structurally 
one, nor can such hybrids be fret gore a to either of ith, parent 
differences, pov reference ‘e the ose bility of F eindiestion taking 
place between 
THE TARDY ‘ceil of the ovules of the Orchidacew has long 
been known. Recent studies of Guignard! among plants of this onde 
add to the number and throw much additional net on the — t. So 
slow is the development of the ovules that in some cases s elaweiirey 
elapses between pollination and fecundation. Orehids of tempera c - 
mates, however, are quicker, the time varying from one to four weeks. Is 
* this because they are more likely to be exposed to anton {nileedon s 
than those of the equable tropics? The orchids are not alone, ce 
in this respect. Maury’ has recently found that sea species of Ver- 
ave rudimentary ovules at the time of pollination, and other 
ants are already known. Probably when the subject n further 
the other. Here is an interesting field for some Amott can botanist to 
work, respecting our native ergot 
eC roe 
‘Ann. Sci. Nat. (Bot.), iv, 202. 
*Bull. Soe, Bot. France, mrs 529, Fide J. R. M.S. 
