elastic |
|
texture |
|
Resiliently deformable with no loss of structural integrity. |
extravaginal |
|
insertion |
|
Distal to or outside the leaf sheath. |
pappus pl. pappi |
|
STRUCTURE |
|
A set of one or more awns (aristae, bristles, setae) or scales at the summit of an inferior ovary just beneath or outside the free portion of the corolla; persisting in the fruit (cypsela) and often aiding wind or animal dispersal; in Asteraceae (Compositae). Considered by some to be an evolutionarily modified upper calyx portion, the lower portion having been incorporated into the floral tube casing adnate to the ovary wall; considered by others to be an outgrowth from the ovary wall. |
canalicular |
|
insertion |
|
Upon or otherwise directly associated with the channel of a petiole or petiolule. |
persistent |
|
duration |
structure |
Remaining attached and conspicuous until the bearing structure reaches maturity. |
vascular |
|
insertion |
|
Upon or otherwise directly associated with the vasculature. |
zygomorphic |
|
architecture |
perianth, calyx, corolla |
Bilaterally symmetric; divisible into two essentially equal portions along only one median logitudinal plane. |
gynaecium |
|
STRUCTURE |
|
See gynoecium. |
coating |
|
CHARACTER |
|
Exudate that covers the surface proper. See also indumentum (vesture), pubescence. |
resupinate |
|
orientation |
lateral structure |
Inverted due to twisting distal to the point of insertion during development. |
circumscissile |
|
dehiscence |
|
Splitting transversely through the exterior wall about its entire circumference, the resulting upper cap-like portion falling away. |
continuous 3 |
|
architecture |
rachilla, rachis |
Not disarticulating at maturity. |
haustorium pl. haustoria |
|
STRUCTURE |
|
An absorbing and anchoring organ, often root-like, excrescent from a vegetative part of a parasitic or hemiparasitic plant, by which the plant communicates intimately with and derives sustenance and support from its host plant, into whose tissues the haustorium intrudes. |
rugulose |
|
relief |
|
Slightly or finely rugose (corrugate, wrinkled). |
hysteranthous |
|
maturation |
non-floral structure, esp. leaf |
Maturing later than the flowers. |
ringed |
|
relief |
bark |
Fissured, mainly horizontally, with at least some of the fissures individually encircling the stem more or less completely. |
intricate |
|
arrangement |
|
Entangled; irregularly intertwined and not readily disentangled. |
infrabracteal |
|
insertion |
|
Upon the axis directly below a bract insertion. |
laminar 1 |
|
insertion |
|
Upon or otherwise directly associated with the lamina (blade) of a foliaceous structure. |
knee root |
|
STRUCTURE |
|
A specialized secondary root of a wetland tree, a portion of which projects above mean water level and appears to bend as a leg does at the knee, its distalmost portion being anchored in the substrate beneath the water. The knee of the root is commonly regarded as a conduit for gas exchange between root interior and atmosphere, a function whose need is posited on the basis of the highly anaerobic and saturated conditions prevailing in wetland substrates. |
acroramous |
|
architecture |
axis |
Branching at or near the apex. |
liguliflorous |
|
architecture |
capitulum (head) |
Bearing florets that all are bisexual and have zygomorphic corollas; in Asteraceae (Compositae). |
sinuous |
|
course |
|
Regularly wavy in one plane, curved alternately and more or less regularly to either side. |
anisopetalous |
|
architecture |
flower, perianth, corolla |
Having petals unequal in size and/or shape. |
sinus pl. sinus, sinuses |
|
FEATURE |
|
The space, indentation, or invagination (or, for some descriptive purposes, the outline thereof) between and delimiting any two consecutive or adjacent lobes or teeth of a structure. |