76 ANTIRRHINUM-ARACHIS. 



ANTlRRniNUM. 13—2. {Bignonicn.) [From an^/, against, n's, nose, said to be so named 

 from an unpleasant odour in some of its species. 



hna'ria, (snap-dragon, y. Ju. %.) erect, glabrous; leaves scattered, lanceolate- 

 linear, crowded together; spikes terminal, dense-flowered; calyx glabrous, 

 shorter than the spur. Flowers large. Toad-flax. Naturalized. 12-18 i. 



elat'iTie, (y. Ju. ©.) procumbent, hairy; leaves alternate, hastate, entire; pe- 

 duncles solitary, axillary, very long. Flowers small, bluish white. Intro- 

 duced. 



trianihop"oriim, \ea.ves whorled, lanceolate, 3-parted; stem decumbent; ra- 

 cemes terminal, few-flowered. Flowers large. Ex. 



APARGIA. 17—1. (CichoracecB.) [A Greek won!, signifying succory.] 



autujnnalis, (false hawk- weed, y. J. %) scape branching; peduncles scaly ; 

 leaves lanceolate, toothed, or pinnatifid, smoolhish. Flowers bright yellow, 

 resembling the dandelion. Fields and road-sides. Introduced. 



APIOS. 16 — 10. (LeguminoscB.) [From the Greek a/i/cs, mild, in allusion to the root.] 

 tubero'sa, (ground-nut, dark p. Ju. rf-) stem twining ; leaves pinnate, with 7 

 lance-ovate leafets; racemes shorter than the leaves; root tuberous, farina- 

 ceous, in taste resembling the cocoa-nut, and highly nutritious. Ex. 



APIUM. 5—2. (Umbelli/ercB.) [Supposed to be derived from the Greek apes, bees, becausfc 

 they are fond of the plant.] 

 petroselinum, (parsley, Ju. J'.) cauline leaves linear ; involucrum minute. Ex. 

 grave'olens, (celery, Ju. c?.) stem channelled ; cauline leaves wedge-form. Ex. 

 APLECTRUM. IS— 1. (OrchidecB.) [From a, without, p/ecfrore, spur.] 

 hiema'lis, (g-p. M. %.) leaf solitary, ovate, striate ; lip trifld, obtuse, with the 

 palate ridged ; central lobe rounded, crenulate. Shady woods. Flowers 

 pendulous. 1 f. 



APOGON. 17—1. {dehor deem.') [From a, without, po^m, beard.] 

 humW'is, (y. Ap. ©.) stem glabrous ; radical leaves sessile ; cauline, ligulate, 

 acute, leaves entire, glabrous. 



APOCYNUM. 18—5. QApocynetB.) [From apo, against, and kunos, a dog.] 

 androsmmifo'liuvi, (dog-bane, r-w. J. %.) stem erect and branching ; leaves 



ovate; cymes lateral and terminal; tube of the corolla longer than the 



calyx, with a spreading limb. 3 f. 

 cannab"inum, (g-y. J. 1\..) leaves lanceolate, acute at each end, smooth on both 



sides ; cymes paniculate ; calyx as long as the tube of the corolla. 



AQUILEGIA. 12—5. (Ranunculacem.) [From the Latin aqua, water, and ago, to gather, so 

 called from the shape of its leaves, which retain water.] 

 camden"sis, (wild columbine, r. and y. Ap. %) horns straight; stamens ex- 

 sert, leaves decompound. Growing frequently in crevices of rocks. 15 i. 

 cceru'lia, (b. J. %.) horns twice as long as the petals; nectaries acute; seg- 

 ments of the leaves deeply lobed. 18-1. Southern. 

 vulgaris, (garden columbine, J. %.) horns incurved ; leafy ; stem and leaves 

 glabrous ; lea\-es decompound. The nectariferous horns become numer- 

 ous by culture ; one hollow horn within another. 15 i. Ex. 



ARABIS. 14—2. {Cruciferm.) [Probably named in Arabia.] 

 lyra'ta, (w. A. J^.) stem and upper leaves smooth and glaucous; radical leaves 



lyrate-pinnatifld, often pilose; stem branched at the base; pedicels mucli 



longer than the calyx. 10 i. 

 canaden'sis, (w. J. %.) stem leaves sessile, oblong-lanceolate, narrow at the 



base, pubescent; pedicels pubescent, reflexed in the fruit; siliques pendu- 

 lous, sub-falcate, nerved. 2 f. 

 rhombo'idea, (spring cress, w. M. Tj..) leaves glabrous, rhomboidal, repand- 



toothed, the lower ones nearly round, on long petioles ; root tuberous. 15 i. 



Wet. 

 ARACHIS. 1&— 10. {Leguminosm) [A Greek word, signifying a rooting plant ] 

 hypogma, (pea-nut, false ground-nut, ©■) stem procumbent, pilose; leaves 



pinnate ; flowers axillary ; peduncles becwne long, and the fruit is ripenea 



under ground. 



