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GLOSSARY OF TECHNICAL TERMS 



Polygamodiaecious. Said of flowers sometimes 

 perfect and sometimes unisexual, the 2 forms 

 borne on different individuals. 



Polygamomonaecious. Said, of flowers sometimes 

 perfect and sometimes unisexual, the 2 forms 

 borne on the same individual. 



Polygamous. Said of flowers sometimes perfect 

 and sometimes unisexual. 



Pome. An inferior fruit of 2 or several carpels in- 

 closed in thick flesh. 



Posterior. The side of an axillary flower next the 

 axis of inflorescence. 



Prickle. Outgrowth of the bark. 



Proliferous. Bearing offshoots. 



Puberulent. Very slightly pubescent. 



Puberulous. Minutely pubescent. 



Pubescence. A covering of short soft hairs. 



Pubescent. Clothed with soft short hairs. 



Pulmnate. Cushion-shaped. 



Punctate. Dotted with depressions or translucent 

 internal glands, or with colored dots. 



Punctulate. Minutely punctate. 



Raceme. An indeterminate or centripetal inflores- 

 cence with an elongated axis and flowers on pedi- 

 cels of equal length. 



Rachis. The axis of a spike or of a compound leaf. 



Radial. Belonging to a ray. 



Radicle. The initial stem in an embryo. 



Receptacle. The axile portion of a blossom bearing 

 sepals, petals, stamens, and pistils; the axis or 

 rachis of the head, spike, or other flower-cluster. 



Reniform. Kidney-shaped. 



Resupinate. Upside down. 



Reticulate. Netted. 



Retrorse. Directed backward or downward. 



Refuse. With a shallow notch at a rounded apex. 



Revolute. Rolled backward from the margins or 

 apex. 



Rhaphe. The adnate cord or ridge connecting the 

 hilum with the chalaza in an anatropous ovule. 



Rhombic. Having the shape of a rhomb. 



Rhomboidal. Approaching a rhombic outline; 

 quadrangular with lateral angles obtuse. 



Rind. The bark of some endogenous stems, like 

 that of Palms. 



Rostrate. Narrowed into a slender tip. 



Rotate. Circular, flat and horizontally spreading. 



Rugose. Wrinkled. 



Rugulose. Slightly wrinkled. 



Ruminate. Looking as if chewed, like the albumen 

 of the nutmeg. 



Sagittate. Shaped like an arrowhead. 



Samara. An indehiscent winged fruit. 



Sapwood. The young living wood of an exogenous 



stem. 

 Scales. Thin scarious bodies, usually degenerate 



leaves. 

 Scarious. Thin, dry and membranaceous, not 



green. 



Scobiform. Having the appearence of sawdust. 

 Scorpioid. A form of unilateral inflorescence 



circinately coiled in the bud. 

 Scurfy. Covered with small bran-like scales. 

 Seed. The fertilized and mature ovule, the result 



of sexual reproduction in a flowering plant. 

 Segment. One of the divisions into which a leaf, 



calyx, or corolla may be divided. 

 Semianatropous. Same as arnphitropous. 



Sepals. The divisions of a calyx. 



Septicidal. Descriptive of a capsule splitting 

 through the lines of junction of the earpels. 



Septum. A partition. 



Serrate. Beset with teeth. 



Serrulate. Serrate with small fine teeth. 



Sessile. Without a stalk. 



Setose. Beset with bristles. 



Setulose. Beset with minute bristles. 



Sheath. A tubular or enrolled part or organ. 



Sinistrorse. Turned or directed to the left. 



Sinus. A recess between the lobes of a leaf. 



Spatulate. Oblong with the lower end attenuated. 



Spike. An indeterminate inflorescence with flow- 

 ers sessile on an elongated common axis. 



Spine. A sharp-pointed woody body, commonly a 

 modified branch or stipule. 



Spinescent. Ending in a spine. 



Spinose. Furnished with spines. 



Stamen. One of the male organs of a flower. 



Staminate. Said of unisexual flowers without pis- 

 tils. . 



Staminodium. A sterile or much reduced stamen. 



Stigma. The part or surface of a pistil which re- 

 ceives the pollen for the fecundation of the 

 ovules. 



Stigmatic. Relating to the stigma. 



Stipe. A stalk-like support of a pistil or cf a 

 carpel. 



Stipel. An appendage to a leaflet analagous to 

 the stipules of a leaf. 



Stipellate. Having stipels. 



Slipitate. Having a stipe. 



Stipulate. Having stipules. 



Stipules. Appendages of a leaf, placed on one 

 side of the petiole at its insertion with the stem. 



Stomata. Breathing pores or apertures in the ep- 

 idermis of leaves connecting internal cavities 

 with the external air. 



Stomatiferous. Furnished with stomata. 



Stone. The hard endocarp of a drupe. 



Strobile. The same as cone. 



Strophiolate. Said of a seed bearing a strophiole 

 or appendage at the hilum. 



Style. The attenuated portion of a pistil between 

 the ovary and the stigma. 



Subcordate. Slightly cordate. 



Subulate. Awl-shaped. 



Sulcate. Grooved or furrowed. 



Superior. Growing or placed above; also in a 

 lateral flower for the side next the axis. 



Suture. A junction, usually a line of opening of a 

 carpel. 



Syncarp. A multiple fruit. 



Taproot. The primary descending root, a direct 

 continuation from the radicle. 



Tegmen. The inner coat of a seed. 



Testa. The outer seed-coat. 



Thyrsoidal. Relating to a thrysus. 



Thyrsus. A mixed inflorescence with the main 

 axis indeterminate and the secondary or ulti- 

 mate cluster cymose. 



Tomentose. Densely pubescent with matted wool 

 or tomentum. 



Tomentulose. Slightly pubescent with matted 

 wool. 



Torose. Cylindric, with contractions or bulges 

 at intervals. 



Torulose. Slightly torose. 



