Flora of North America Glossary
Displaying 301-325 of 2673
| Term | Synonyms | Category | Limitation | Definition |
|---|---|---|---|---|
| bristled | = aristate, awned | apex | Bearing one or more bristles (aristae, awns, setae). | |
| bristle-shaped | = setaceous, setiform | solid shape | Elongate, slender, terete, straight, terminating in a fine point, and apparently stiff. | |
| bristly | > hispid, setose | pubescence | Of or bearing relatively long and slender, more or less straight, terete, fine-pointed, stiff trichomes. | |
| brittle | = friable | texture | Dry, firm and easily broken. | |
| brochidodromous | venation | Having a single median primary vein that branches to either side along its length, the secondary veins incurving strongly near but short of the margin, interconnecting serially, and forming a succession of marginal loops. | ||
| broom-shaped | = muscariform, penicillate | solid shape | Having a proximal axis that bears a distal cluster of elongate slender branches or appendages, these variously ascending to erect; like a broom. | |
| buckler-shaped | = scutate, scutiform | solid shape | Relatively thin with opposite broad oblong faces, planate to shallowly concave-convex, sometimes thickened about the periphery such that each face has a marginal rim; like an oblong shield. See also platter-shaped (scutellate, scutelliform), which is not clearly distinct in its application. | |
| bud | STRUCTURE | A rudimentary, unexpanded stem, stem branch, inflorescence, inflorescence branch, or flower, or a combination thereof, in a resting state; enveloped or not by subtending protective scales. | ||
| bud scale | STRUCTURE | A scale that, alone or aggregated with others, envelops and protects a bud. | ||
| bud-scale scar | FEATURE | A scar on a stem due to abscission of a bud scale. The scar(s) encircle(s) the axis to which the bud was terminal, each single scar having an outline like that of a transverse section through the base of the bud scale that was inserted there. Sets of bud scale scars (one set per bud) usually delimit seasonal stem growth increments in temperate zone taxa. | ||
| bulb | STRUCTURE | A thickened underground perennating structure consisting of a stem with numerous closely proximate nodes bearing many tightly imbricate, thickened, often fleshy, foliaceous organs containing large amounts of stored food, usually in the form of starch; the whole usually enveloped and protected by imbricated scarious or fibrous foliaceous organs. | ||
| bulbel | STRUCTURE | A comparatively small bulb branching laterally from a larger, currently primary one. | ||
| bulbil | = bulblet | STRUCTURE | A small bulb-like structure produced from a sterile or fertile plant structure other than a bulb, usually within a leaf axil, leaf sinus, or inflorescence, serving as a vegetative propagule. | |
| bulblet | = bulbil | STRUCTURE | A small bulb-like structure produced from a sterile or fertile plant structure other than a bulb, usually within a leaf axil, leaf sinus, or inflorescence, serving as a vegetative propagule. | |
| bulbose | = bulbous | architecture | plant | Growing from and/or bearing bulbs. |
| bulbous | = bulbose | architecture | plant | Growing from and/or bearing bulbs. |
| bulla pl. bullae | = blister, pustule | FEATURE | A relatively coarse, rounded protrusion or convexity. See also papilla. | |
| bullate | = blistered, puckered, pustulate | relief | Having relatively coarse, irregularly disposed, rounded protrusions or convexities resembling blisters. See also papillate (papillose). | |
| bulliform | solid shape | Resembling a blister; broad, relatively thin at the periphery, the lower surface approximately flat, the upper shallowly to strongly convex. | ||
| bundled 1 (not recommended) | = fascicled, fasciculate | architecture | inflorescence | Comprising one or more fascicles. |
| bundled 2 (not recommended) | = fascicled, fasciculate | arrangement | Disposed in one or more fascicles, the members of each inserted close together and only slightly if at all divergent from one another. | |
| bundle (not recommended) | = fascicle | nominative | inflorescence | A cluster of pedicellate flowers that are inserted very close together and little if at all divergent from one another, the whole sessile or subsessile. |
| bundle scar | FEATURE | A smaller scar within the bounds of a leaf scar at the point where a vascular bundle traversed the abscission layer between stem and leaf. | ||
| bursicle | STRUCTURE | A pouch- or flap-like protrusion from the stigma that encloses the caudicle of a pollinium. | ||
| bush | < frutex, shrub | nominative | plant | A short shrub that branches from ground level. See also subshrub (suffrutex, undershrub), tree, woody clump. |
Displaying 301-325 of 2673