58 STUDY OF COJIMON PLANTS. 



window garden, the drug store, collections of preceding 

 years, and seedlings raised in the laboratory will, even in 

 winter, furnish abundant material. The following may be 

 suggested as a partial list : English iv}", geranium, prim- 

 rose, verbena, rose, oxalis, maurandia, nasturtium, oak, 

 maple, elm, lilj', Indian corn, lyacinth, amaryllis, arbor 

 vitae, hemlock, juniper, and different species of pines.^, 



/ >? 



Schedule for Leaf Description. 



1. Position. Radical ^ or cauline. ' ./ / 



2. Arrangement. Opposite, alternate, whorled, fascicu- 



late. 



3. Relation to Stem. Petiolate, sessile, . perfoliate, 



sheathing, connate, decurrent, etc.„ - ' 



4. Stipules. Described as leaves. If absent, the leaf is 



said to be exstipulate. 



5. Form. Acicular, awl-shaped, linear, oblong, ellipti- 



cal, oval, rotund, ovate, lanceolate, reniform, 

 obovate, oblanceolate, etc. 



6. Apex and Base. For special terms see dictionary and 



text-books. 



7. Margin. Entire, serrate, dentate, crenate, sinuate, 



irregular, lobed, cleft, parted, divided, etc. 



8. Venation. Pinnate, palmate, parallel. 



9. Surface. Glabrous, glaucous, pubescent, wooly, vil- 



lose, liirsute, pricklj-, etc. (These terms apply also 

 to the surface of other organs.) 

 10. Compound Leaves. Pinnate, bi-pinnate, tri-pinnate, 

 palmate, bi-palmate, tri-palmate, pinnately or pal- 

 mately decompound, etc. 



1 In addition to tlie glossary, Gray's Lessons, Section 7, and the vari- 

 ous dictionaries may be consulted with advantage. 



2 A misleading term, but fixed In the language. 



