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adventitious root |
|
STRUCTURE |
|
A root that arises laterally from some part of a shoot, often from the lower portion of a main stem. |
|
infrapetiolar |
|
position |
bud |
Axillary and surrounded by the petiole base at maturity. |
|
sheathing 2 |
|
base |
laminar structure |
Terete or involute and closely enclosing the supporting axis for some distance above the point of insertion. |
|
utricle |
|
nominative |
fruit |
Dry, indehiscent, one-seeded and with the pericarp thin and free from the seed; derived from a single, superior, simple ovary. |
|
mesocarp |
|
STRUCTURE |
|
The middle tissue layer of the pericarp of a fruit. |
|
callus |
|
FEATURE |
|
A small, relatively hard covering, outgrowth, or swelling of tissue; esp. in axes of grass (Poaceae) inflorescences just distal to points of eventual disarticulation. |
|
iridescent |
|
coloration |
|
Reflecting a pattern colors from throughout the visible spectrum, the pattern changing with the angle of view. |
|
perigynium 1 pl. perigynia |
|
STRUCTURE |
|
Two whorls of bracts, scales or setae immediately subtending the ovary, sometimes cupulate (cup-shaped) or ampulliform (flask-shaped, lageniform) and investing the fruit (achene); in Cyperaceae. |
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entire |
|
margin |
|
Uninterrupted; not deviating significantly from its general line, thus lacking any localized convexities or concavities. |
|
annulus 1 pl. annuli |
|
STRUCTURE |
|
A small ring-like protrusion from the strobilar stalk near its base and below the lowermost sporangiophores, sometimes bearing small sporangia; esp. in Equisetum. |
|
mottled |
|
coloration |
|
Having one or more indistinctly delineated, irregularly shaped, areas of varying size and contrasting hue and/or intensity. |
|
costule |
|
STRUCTURE |
|
A longitudinal primary vein in a diminutive laminar structure, such as the blade of a leaflet, pinna or pinnule; a diminutive costa (rib). |
|
…pinnate |
|
architecture |
foliaceous structure |
Compound with the number of orders of leaflets indicated by the prefix, each order pinnate; as in bipinnate, tripinnate. |
|
spiculate |
|
relief |
|
Having small, fine, stiff, acute protrusions that resemble little spikes. See also scabridulous (scabrellate, scabrellous, which is not clearly distinct in its application. |
|
equitant |
|
arrangement |
|
Alternate, distichous, basal, and congested, each conduplicate with its lateral edges overlapping and/or overlapped by those of the immediately adjacent one(s). |
|
apostemonous |
|
architecture |
flower, androecium |
Having two or more distinct stamens; having the stamens unfused. |
|
grumous |
|
solid shape |
|
Having an external aspect like a cluster of grains, basically convex overall. |
|
laticiferous |
|
exudation |
|
Producing and exuding latex. |
|
obconic(al) |
|
solid shape |
|
Transversely round, essentially triangular in median longitudinal section, and broadest distally; inversely conic(al) (cone-shaped). |
|
rounded |
|
base |
|
Convex overall and more or less regularly curved. |
|
obcordate |
|
plane shape |
|
Inversely cordate (heart-shaped). |
|
cilium 2 pl. cilia |
|
STRUCTURE |
|
A motile hair- or whip-like structure extending from the surface of a cell. |
|
poricidal |
|
dehiscence |
|
Forming one or more apertures in the exterior wall, usually apically or sub-apically, through which the contents pass to the outside. |
|
staminate |
|
architecture |
inflorescence, flower, floret |
Having functional stamens but no functional pistils, thus unisexual and male. |
|
axillary |
|
insertion |
|
Within the axil; nodal and at or very close to the vertex of the distal angle between a lateral structure, especially a leaf, and the axis that bears it. |
