GLOSSARY OF TECHNICAL TERMS 25 
The specimens once mounted and properly labelled are ready for 
distribution in the herbarium, which in arrangement is quite the same as 
a large card catalogue, the mounted herbarium specimens corresponding 
to the cards of the card catalogue. The whole herbarium can be arranged 
according to the relationships or assumed relationships of the families, 
genera, and species, or by the much simpler alphabetic method, first arranged 
alphabetically as to families, second under each family alphabetically as to 
the genera, and third under each genus of more than one species, alpha- 
betically as to species. In practice a combination of the two methods will 
probably be found to be the most convenient, arranging the families accord- 
ing to their natural order, but under each family arranging the genera 
and species alphabetically. 
In small collections family covers of stout tough paper which, when 
folded once, should be about the size of the herbarium sheets, should be 
supplied. The family name should be written on the lower left-hand corner 
and all members of the family should be distributed into the family cover 
or covers. In large herbaria it is usual to supply also genus covers, and 
even species covers, but these are not necessary in small collections. For 
temporary purposes specimens can very well be preserved between folded 
sheets of thin paper, and for this purpose old newspapers will serve very 
well. 
For proper preservation the herbarium should be kept in tight cases 
or boxes, as nearly insect- and dust-proof as possible. The cases should 
be kept in a dry place and to repel possible insect attacks moth balls, 
powdered naphthalin, or some other repellant should be placed with speci- 
mens. If cases are made for the purpose they should be provided with 
pigeon holes about 49 cm deep, 33 cm wide, and 16 cm high. 
In large herbaria it is customary to poison the specimens with corrosive 
sublimate. This may be done by immersing the specimens before mounting 
in a nearly saturated solution of corrosive sublimate in about 50 percent 
alcohol and again drying the specimen, or the mounted specimen can be 
painted over with the same solution by the use of a soft brush and then 
dried. Great care must be taken, however, in handling the corrosive sub- 
limate solution on account of its poisonous properties. 
GLOSSARY OF TECHNICAL TERMS 
'. A; in Greek compounds, without, as apetalous, Adherent; growing fast to another body. 
without petals. Adnate; united or growing together. Applied 
Abnormal; contrary to the usual or the natural | to the anther when it is fixed by its whole 
structure. | length to the filament or its prolongation. 
Abortive; imperfectly developed. | Ascending; rising gradually upward. 
Abrupt; suddenly ending, as though broken off. | adventitious; out of the proper or usual place; 
Abruptly pinnate; a pinnate leaf ending with — applied to recently introduced plants that 
a pair of leaflets. are hardly naturalized. 
Acaulescent; with a very short or no stem Aggregate fruit; a fruit composed of many 
above ground. = a more or less united carpels produced by 
Accessory; something additional. Saeh siowee! 
Acoresent; growing larger after POWET ER Ala; a wing; the lateral petals in typical le- 
Achene; a small, dry, 1-seeded, indehiscent, A a 
ASE OT | guminous (papilionaceous) flowers. 
Aoicular; needle-shaped. | Albumen; nourishing matter stored within the 

Aculeate; armed with prickles, as the stem seed. 
of the rose. | Albuminous; furnished with albumen. 
Acumen; a tapering point. Alternate; one after another, as leaves placed 
Acuminate; tapering to a point, the sides | on opposite sides of a stem, one at each 
incurved. node; when between bodies of the same 
Acute; sharply pointed, the sides straight, not or different sets of organs. 
incurved. | Ament; a slender, usually sealy, dense spike. 
