14 APPENDIX. 
Mericarp, one carpel of an umbilliferous fruit. (Plate 36, fig. 9.) 
Midrib, the main rib of a leaf. | 
Monadelphous, said of stamens when united by their filaments into one set. (Plate 46, fig. 4.) 
Monandreus, having only one stamen. 
Moniliform, necklaced, ?. ¢., contracted at intervals. (Plate 23, fig. 5.) 
Monocotyledonous, having only one cotyledon. 
Monecious, having stamens or pistils only. (Plate 33, figs. 3 and 4.) 
Monogynous, having but one pistil or style. (Plate 102, fig. 4.) 
Monopetalous, when the corolla is united into one piece. (Plate 102, fig. 3.) 
Monosepalous, when the sepals are united into one body (as in the flower of plate 127). 
Monospermous, one-seeded. 
Mucronate, tipped with a short, abrupt point. (Plate 179, fig. 3.) 
Multifarious, in many rows. 
Multifid, many-cut. 
Multilocular, many-celled. 
Muricate, beset with short, hard points. (Plate 44, fig. 5.) 
Napiform, shaped like a rounded turnip. 
Naturalized, an introduced plant that has run thoroughly wild, and perfects its seed. 
Nectar, honey, or honey-like secretions. 
Nectariferous, bearing honey, or having a nectary. 
Nectary, a cavity or gland that secretes nectar. 
Needle-shaped, see Acerose, 
Nerve, used to distinguish leaf-ribs or veins when parallel, and more or less straight. 
Netted-veined, when the veins branch and anastomose, forming a net-work. 
Nodding, said of an organ when the summit hangs downward. 
Nodose, nubby. 
Normal, in a usual way, according to rule. 
Nuciform, nut-shaped. : | 
Nut, a hard, bony, mostly one-seeded fruit. (Plate 43, fig. 5.) 
Nutlet, diminutive of nut; the stone of a drupe. 
O6-, a prefix signifying inversion or Opposition ; as 
“Obcordate, heart-shaped, with the n 
i apex. (Plate'25,fig.9.) 
Oblanceolate, \ance-shaped, with the point downward (the leaves of plate 104). 
Oblique, applied to organs having unequal sides. (Plate 147, fig. 3.) 
_ Oblong, much longer than broad (as the brown leaf, plate 160). 
_ Obovate, ovate, with the broadest end uppermost. 
__ Obtuse, blunt-ended (the apex of leaf 3, plate 51). 
_ Ochroleucous, dull cream-color. 
__ Octo-, eight, in Greek derivatives: as 
_— Octogynous, eight-pistiled. 
| Octandrous, cightstamencd. 
Offset, a branch given off near the ground and taking root. 
Opposite, said of leaves when their 
CO eee ee 
_—— Orbicular, cixcular in outline. (Plate 18, fig. 2.) 
ran, any member of a plant—as a petal, stamen, leaf, branch, ete., etc. 
otch upward, and the point of fixture or support at the 
(Plate 151, fig. 3.) 
petioles are exactly opposite each other upon the stem. 
