390 BOTANICAL GAZETTE [way 
A few cases were noted where sprouts were producing fruit at a very 
young age. On the west side of the Patagonias, a stump 15 cm. tall 
and o.6 cm. top diameter had produced a sprout 1.8 meters tall and 2.5 
cm. base diameter. This sprout bore 14 fully formed berries. Again, 
near the mountain pass on the main road between Washington Mine 
and Nogales, several side branches had been cut from the crown of a 
mature alligator juniper, and the resulting sprouts, which were 8-13 
years old, ranged from 30 to 60 cm. in length. Many of them were 
loaded with fully formed fruits. 
The sprouting ability of both these species is a controlling influence 
in maintaining a satisfactory reproduction in this region. Many 
sprouts of Chihuahua pine were found which were 10-15 cm. base diam- 
eter and 4.5-6 meters tall, and a few were found 20-22.5 cm. base 
diameter and g-10.5 meters tall. Many alligator juniper sprouts were 
noted which were 7.5—10 cm. at the base and 4.5-4.8 meters tall. All 
sprouts on both species are still making a thrifty growth.—F. J. PHILLIPS, 
The University of Nebraska, Lincoln. 
CELL DIVISION IN LYNGBYA 
(PRELIMINARY NOTE) 
The form here described is a large salt water species occurring at 
Cold Spring Harbor, L.I., and answers to the description of Lyngbya 
majuscula. Ina cell of Lyngbya there is a large central body or nucleus, 
which in the stages between divisions is, except for the absence of a 
limiting membrane, much like the resting nuclei of the higher plants. 
The nucleus contains a mesh of fine fibers along which small granules 
are scattered. The mesh is imbedded in a clear substance resembling 
nuclear sap. When treated with either Haidenhain’s hematoxylon 
or Flemming’s triple, the mesh stains like linin and the granules like 
chromatin. Although there is no membrane or definite boundary 
around the nucleus, it is quite distinct from the surrounding cytoplasm. 
The above description is quite similar to that which OLtvE' gives of the 
nuclei of some of the Cyanophyceae studied by him. 
As a cell of Lyngbya approaches division, fine fibers appear around 
the nucleus in a plane perpendicular to the longitudinal axis of the fila- 
ment. These fibers, which have an appearance closely similar to that 
of the spindle fibers of other plants, are very numerous, and run from 
+ OLIVE, EW... a division of the nuclei of the Cyanophyceae. Beih. Bot. 
Centralbl. 18: 9-44. 1905. 
