232 BOTANICAL GAZETTE [MARCH 
fragments of an Asterocalamites indicative of Upper Devonian or Lower Carbonif- 
erous age.—Maury?! reports Hicoria minor, Castanea vulgaris, Fagus pliocenica, 
Tlex aquifolium, and Bambusa lugdunensis from a new Pliocene locality at Capelle 
in the Department of Cantal, south central France.—Hartz?? records characteris- 
tic spikes of the common Dulichium arundinaceum (L.) Britt. of eastern North 
America, along with the remains of Picea, Brasenia, Hydrocharis, Carpinus, and 
Betula, from the interglacial of Brérup in southern Jutland, Denmark.—EpwarD 
W. BERRY 
Hume? calls attention to the anthracnose of the pomelo in Florida caused by 
Colletotrichum gloeosporoides. He reported in 1g00 an injury to pomelo leaves 
caused by this fungus, a disease that was then referred to as leaf spot. HUME 
first noticed the same fungus on pomelo fruits in 1901 and now reports it upon 
twigs of the same plant. It is also known to cause a disease of lemon and lime 
fruits and is frequently seen on the leaves and twigs of the sweet orange and rarely 
on its fruit. Trees whose vitality has been reduced by improper soil conditions 
or by mechanical injury or through injuries inflicted by winds, frost, insects, oT 
other diseases are more subject to this anthracnose than trees in perfect condition. 
It is recommended that all diseased fruits and branches be removed and burne 
and the trees sprayed with the usual Bordeaux mixture early in the season from 
May to July. Spray treatment should particularly be applied to trees whose 
branches show any evidence of the anthracnose. It is also recommended that 
the fruit be washed, before packing, with water to which has been added some 
ammoniacal copper carbonate solution or potassium sulfid. The later treatment 
will prevent the serious injury to the fruit that frequently occurs on the way to 
market.—E. Mrap WItcox. - 
By MEASURING the distance between oppositely located branches of small 
trees and shrubs, GANoNG?4 has established that with autumnal defoliation the © 
branches commence an inward movement toward the main axis. This inwat 
movement continues after defoliation, reaching a limit with the full winter condi- 
tion in January. With the swelling of the buds in April a reverse movement 
commences which continues through vernal foliation to the full summer condition 
in June. The movement accompanying defoliation and foliation is attribute 
merely to decreasing and increasing weight of branches, by loss and gain of leaves, 
but the intervening movement is regarded as indirectly thermometric because 
from experimental data (quite limited and so regarded by the author) it seems 
the movement is correlated with variations in the amount of water in the stem 
that 
and 
2t Maury, P., Le Monde des Plantes, Nov. 1903, PP- 54-55- 
22 Hartz, N., Meddel. Dansk. Geol. Foren. 10:13-22. figs. 5. 1904: 
23 Hume, H. Haroxp, Anthracnose of the pomelo. Bull. Florida Exp. Stat 
74:157-172. pl. I-4. 1904. 
24 GANONG, W. F., An undescribed thermometric movement of the branc 
shrubs and trees. Ann. Botany 18: 631-644. figs. 6. 1904. 
hes in 
