56 BOTANICAL GAZETTE (JuLy 
cyanhydric acid; (2) that it exists in the hypocotyl, plumule, and root, 
since when these organs are detached from the cotyledons and crushed 
in a fresh solution of emulsin the odor of bitter almonds is developed. 
Finally, I have proved that germination does not change the local- 
ization of these two substances. ‘The emulsin, in particular, does not 
change its position in the seedling, or only after having undergone 
certain changes which modify its nature and properties —M. L. Lutz, 
arts. 
SYNONYMY OF MUCILAGO SPONGIOSA (Leys.). 
THE earliest reference to any form of Myxomycetes appears ina 
citation by Haller from “ Phil. Bonanni, Recreationes mentis & oculis, 
Rom. anno 1684.” Its synonymy may be presented in the order of 
time as follows: 
1. Muctlago filamentosa ramosa Bonanni, Recreationes 1684. 
2. Muctlago crustacea alba Micheli, Nov. Pl. Gen. 1729; Battarra, Fung. 
Hist. 1755. 
rf oe crustacea alba, a. 8. y. Haller, Eu. Stirp. Helv. 1742. 
. Mucor crustaceus, spongiam simulans, cortice in pulverem fatiscente 
eke, Meth, Fung. 1753. 
5. Mucilago. Adanson, Fam. des Pl. 1763. 
6. Mucilago alba, crustacea & filamentosa, a. B. y. Haller, Hist. Stirp. 
Helv. 1768. 
7. Byssus bombycina Retzius, Act. Holm. 1769. 
8. Byssus floccosa Schreber, Spic. Lips. 1771. 
g. Mucor spongiosus Leysser, F1. Hal. 1783. 
10. Muctlago crustacea Schrank, Bay. Fl. 1789. 
11. Reticularta alba Bulliard, Champ. 1791. 
12. Spumaria mucilago Gmelin, Syst. Veg. 1791. 
13. Reticularia ovata, var. Withering, Bot. Arr. 1792. 
14. Spumaria cornuta Schumacher, Eu. Pl. 1803. 
15. Spumaria alba De Candolle, Fl. Fr. 1805. 
In no. 6, as in no. 3, Haller’s species is much more extensive than 
in the synonymy elsewhere; it includes three of Micheli’s species 
which he considers all forms or varieties of one. The second form, 
“B. Mucilago alba, ramosa, radices arborum simulans Micheli, p. 216, 
t. 96, f. 3” is considered by Fries to be a representation of the plas- 
modium of some species; it is under this form the citation from 
