filament |
|
STRUCTURE |
|
The stalk, when present, of a stamen, clearly differentiated from and bearing at its summit an anther. |
perfect |
|
architecture |
flower |
Having functional pistil(s) and functional stamen(s) both present, thus bisexual (hermaphroditic). |
perfoliate |
|
architecture |
foliaceous structure |
Having a sessile lamina (blade) that uninterruptedly encircles the bearing axis, which thus passes through it at some point within the margin. See also amplexicaulous, connate-perfoliate. |
fasciate(d) |
|
fusion |
equivalent structures |
Abnormally proliferated in size and/or number and more or less connate, the result often monstrous. |
pneumatophore |
|
STRUCTURE |
|
A structurally and functionally specialized root serving as an aboveground aerating organ; found in some woody taxa of wet habitats, notably some mangroves. |
follicetum pl. folliceta |
|
STRUCTURE |
|
An aggregate of follicles produced from a single flower with multiple simple pistils. |
pith |
|
STRUCTURE |
|
The central ground tissue of a stem or, when present, of a root, consisting of thin-walled parenchyma cells; distinct and more or less soft and spongy relative to the other tissues of the axis; sometimes partly or wholly degenerating after secondary growth has begun. |
flexuose |
|
course |
|
See flexuous. |
pseudoaxillary |
|
insertion |
|
Only apparently axillary; originally extraaxillary but displaced to the axil by differential growth during development. |
gigantic |
|
size |
plant |
Strongly enlarged; unusually or unexpectedly very large throughout. |
prickly |
|
architecture |
|
Bearing prickles. |
radicle |
|
STRUCTURE |
|
The primary root, or its primordium, in an embryo; the portion of an embryo axis that develops into the root. |
rhizophore |
|
STRUCTURE |
|
A stem branch that bears no leaves and from which roots eventually arise; esp. in Selaginellaceae. |
hirsute |
|
pubescence |
|
Bearing coarse, rough, elongate, more or less erect, capillate trichomes. See also hirtellous. |
samara |
|
nominative |
fruit |
Dry, indehiscent and having one or more integral alate portions that aid in aerial dispersal. |
incumbent 2 |
|
orientation |
anther |
Oppositely parallel to the filament on the adaxial side of the latter. |
appendage |
|
STRUCTURE |
|
Any subordinate structure ontogenetically derived from and associated with a given organ or part. |
isopetalous |
|
architecture |
flower, perianth, corolla |
Having the petals essentially alike in size and shape. |
basal cell |
|
STRUCTURE |
|
Any of the ring of cells forming the lowermost (proximal) portion of an antheridial wall. |
abortive |
|
maturation |
spore, pollen, seed |
Never attaining functional maturity due to defective or arrested development. |
latex pl. latices, latexes |
|
SUBSTANCE |
|
A moderately viscous and sticky exudate, often milky, sometimes otherwise colored or clear. Overlaps conceptually with gum. |
bigeminate |
|
architecture |
foliaceous structure |
Compound with two orders of leaflets, each order bifoliolate. |
spikelet |
|
nominative |
inflorescence |
A compound structure belonging to the penultimate subdivisional order of a sedge or grass inflorescence; consisting of one or more florets (each a diminutive flower subtended by specialized bractlets (bracteoles) called scales or glumes in sedges, lemma and palea in grasses), spicately arranged along a common axis (rachilla), the axis and florets together subtended by one or (usually) two bracts (first and second glumes). The spikelet is usually considered to be the basic unit of inflorescence in Cyperaceae and Poaceae (Gramineae). |
course |
|
CHARACTER |
|
Linear pattern of the centerline through the length of an axis or vein. |
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. |