EUCAL YPTUS, 231 



Obvolute (in the bud): when the margins of one leaf alternately overlap 



those of the opposite one. 



Ochreate : furnished with ochtece (boots) , or stipules in the form of sheaths. 

 Ochroleucous : yellowish-white; dull cream-color. 

 Octo-, eight, enters into the composition of 

 Octagynous : with eight pistils or styles . 



Octamerous : its parts in eights. Octandrous : with eight stamens, etc. 

 Offset : short branches next the ground which take root. 

 One-ribbed, One-nerved, etc.: furnished with only a single rib, etc., etc. 

 Opaque, applied to a surface, means dull, not shining. 

 Oberculate : furnished with a lid or cover (operculum), as the capsules of 



Mosses. 

 Opposite : said of leaves and branches when on opposite sides of the stem 



from each other (i. e. in pairs). Stamens are opposite the petals r 



etc., when they stand before them. 



Orbicular^ Orbiculate : circular in outline or nearly so. 

 Organ : any member of the plant, as a leaf, a stamen, etc. 

 Osseous : of a bony texture. 

 Oval: broadly elliptical. 



Ovary : that part of the pistil containing the ovules or future seeds. 

 Ovate : shaped like an egg with the broader end downwards, or, in plane 



surfaces, such as leaves, like the section of an egg lengthwise. 

 Ovoid : ovate or oval in a solid form. 

 Ovule : the body which is destined to become a seed. 



Palea (plural palece}: chaff; the inner husks of Grasses. 



Paleaceous: furnished with chaff, or chaffy in texture. 



Palmate: when leaflets or the divisions of a leaf all spread from the 



apex of the petiole, like the hand with the outspread fingers. 

 Pahnately (veined, lobed, etc.): in a palmate manner. 

 Panduriform : fiddle-shaped (which see.) 



Panicle: an open cluster; like a raceme, but more or less compound. 

 Panicled, Paniculate : arranged in panicles, or like a panicle. 

 Papery : of about the consistence of letter-paper. 

 Papilionaceous : butterfly-shaped; applied to such a corolla as that of the 



Pea and the Locust-tree. 



Papilla (plural papilla): little nipple-shaped protuberances. 

 Papillate, Papillose: covered with papillae. 

 Pappus : thistle-down. The down crowning the achenium of the Thistle r 



and other Compositae, represents the calyx ; so the scales, teeth, 



chaff, as well as bristles, or whatever takes the place of the calyx in 



this family, are called the pappus. 



Paraphyses : jointed filaments mixed with the antheridia of Mosses. 

 Parenchyma: soft cellular tissue of plants, like the green pulp of leaves- 



