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INTRODUCTION TO BOTANY.
Leafstalk, j&e/io/are5. Growing on the leafstalks. Chamaerops
humilis.
Axillary, axillares. Growing at the setting on of the
leaves. Citrus Medica, Celastrus multiflorus.
Infraxillary, inferaxillares. Growing below tlie setting
on of the leaves. Ribes spinosum. PI. 6, fig. 16.
Superaxillary, superaxillares. Growing above the setting
on of the leaves. Gleditsia triacanthos. PL 4, fig. 16.
Involucral, involucmles. Growing on the involucrum.
Silybum Marise, Centaurea benedicta.
Pericarpial, pericarpiales. Growing on the pericarp.
Allamanda cathartica.
3. Origin.
Stipulean, Aculei stipideani. Growing near the leaves,
and appearing to arise from stipules changed. Berberis,
Ribes spinosum. Paliurus aculeatus.
Petiolean, petioleani. Arising from leafstalks changed
into arms. Mimosa verticillata.
FoWolean, Jhlioleani. Arising from leaves changed into
arras. Chamasrops humilis.
Ramean, rameani. Arising from branches changed into
arms. Prunus spinosi, Elaeagnus angustifolia.
4. Direction.
Bent upwards, Aculei infiexi. Bent and pointing to the
upper part of the stem, or branch.
cineraria.
Rosa muscosa. Mimosa
Bent downwards, reflexi. Bent and pointing to the
lower part of the stem, or branch.
rubiginosa, R. canina.
5. Form.
Rubus fruticosus, Rosa
Awlshape, Aculei siihulali. Rosa villosa, Robinia
Pseudo-acacia.
Bristlelike, setacei. Very slender, Rosa spinosissima.
Conical, conici. Zanthoxylum Clava-Herculis.
^ Straight, reciilinei, recti. Rosa spinosissima.
Bent, curvi. Rosa muscosa, R. rubiginosa.
6. Simplicity.
Simple, Aculei simplices. Cactus, Celastrus.
Branched, ramosi. Gleditsia horrida.
Two-parted, bipartiti.
Three-parted, tripartiti. Berberis vulgaris, Ribes syl-
vestris. PI. 6, fig. 16.