OLOSSABY 



11 



Lobule, a small lobe. 



Loculicidal (dehiscence), splitting down the 



back between the divisionB, 



as shown in fig. 46, a. 

 Lucidus, shining. 

 Lunate, shaped somewhat like 



the new moon, but not so 



legulai in outline. 

 Lutefls, yellow. 

 Lyrate, a pinnatifid leaf with 



the lobes successively and 



gradually enlarging upwards 



from the petiole, and ending 



in one larger than the others 



(fig. 71). 



Macros, in composition, long, large, as 

 macrophylla, large-leaved. 



Marcescent, withering, but remaining in its 

 place, like the calyx and corolla of many 

 flowers. 



Medulla, botanical name for pith. The 

 medullary rays {see p. 30) are the ' silver 

 grain ' of the wood of Dicotyledons. 



Membranous, of the texture of membrane ; 

 thin and flexible ; more or less papery. 



Micropyle, the orifice in the ovule {see 

 p. 24). 



Midrib, the large vein extending along the 

 middle of a leaf from its petiole nearly or 

 quite to the other end, as shown in the 

 leaves in figs. 4, 34, 72 &c. 



Mono, in compounds signifies one, as mono- 

 cotyledon, one seed-leaf. 



Monocarpic, flowering and fruiting only 

 once, like some of the American Aloes 

 (Agave) (see p. 21). 



Monochlamydeous, the term given to 

 flowers which have only one set of floral 

 envelopes — either petals or sepals {see 

 p. 126). 



Monocotyledonous, having one sheathing 

 cotyledon or seed-leaf, as in the Oat, 

 Wheat, Barley, Onion, Lily, and most of 

 the plants belonging to the Monocotyledo- 

 nous group, described between p. 805 and 

 p. 972. 



Monoecious, with the stamens and pistils 

 in separate flowers but on the same plant, 

 as in Cucumbers, Marrows, Begonias, 

 and Filberts. At fig. 7, / represents the 

 female flowers, and m the male flowers 

 of the Filbert on the same branch. 



Monosepalous, monopetalous, when the 

 sepals or petals are joined by their edges 

 so as apparently to form one, the same 

 as gamosepalous and gamopetalous 

 (fig- 59). 



Mucronate, abruptly tipped with a short 

 point of the same texture. 



Multi, in compounds signifies mam/y, as 

 mulUflorus many - flowered, nrnlticolor, 

 many-coloured. 



Multifid, divided into many parts. 

 Muricate, covered with sharp short points. 

 Mutabilis, changeable. 

 Mycelium, the ' spawn ' of Fungi (see ' Mush- 

 rooms,' p. 1167). 



Nectary, an organ which secretes honey. 

 Nectaries are found at the base of the 

 petals in Buttercups ; in the Hellebores 

 (p. 152) &o. the petals are reduced to 

 nectaries, and in the Paruassia (p. 428) 

 there is a radiating fringe of nectaries at 

 the base of each petal. 



Netted, covered with veins or nerves con- 

 nected together like network, as shown in 

 figs. 84, 39, 98, 101 &e. 



Niger, black. 



Nitidus, smooth and shining. 



Nivalis, from snowy regions. 



Niveus, snowy-white. 



Node, a point in a stem where a leaf is pro- 

 duced. 



Nucleus, the name given to the central and 

 denser mass in the protoplasm {see p. 22). 



Nudus, naked. 



Nut, a hard dry 1-seeded seed-vessel. 



Nutans, drooping, nodding. 



Ob, in conjunction with terms means in- 

 verted ; thus obcordate (fig. 72) means a 

 heart-shaped leaf attached to the stalk by 



FIG. 72.— OBCORDATE. FIG. 73.— OBOVATE. 



the narrow end ; obovate (fig. 73) means 

 ovate with the attachment at the narrow 

 end, and the same with ob- 

 lamceolate (fig. 68, 6). 



Oblong, long oval, equally 

 broad at each end. 



Obtuse, rounded or blunt. 



Ocrea, a tubular mem- 

 branous stipule surround- 

 ing the stem, as in many 

 of the Polygonums (fig. 

 74). 



Odes, Oides, a termination 

 denoting similarity, resemblance. 



Opposite, when two similar organs, as leaves, 

 for example, grow one on each side of some 

 body ; or different organs are opposed to 

 each other with a stem between them. 



PIG. 74. — OCRBA. 



