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neotenous |
|
maturation |
structure |
Retaining at maturity attributes that are usually restricted to the juvenile stage. |
|
ridge |
|
FEATURE |
|
A very narrow, elongate, relatively low protrusion; esp. on fruits in Apiaceae (Umbelliferae). |
|
zoned |
|
coloration |
|
Having two or more fairly distinctly delineated areas of contrasting hues and/or intensities. |
|
…faced |
|
solid shape |
|
Having relatively large, flat or shallowly curved portions of the external surface that are bounded by more or less distinct angular discontinuities in that surface, of the number indicated by the prefix; as in three-faced. |
|
obcordiform |
|
solid shape |
|
Inversely cordiform (heart-shaped). |
|
cymose |
|
architecture |
inflorescence |
Comprising one or more simple or compound cymes. See also cincinnate, cymulose, dichasiate, helicoid-cymose, monochasiate, rhipidiate, scorpioid-cymose. |
|
porosity |
|
CHARACTER |
|
Presence and disposition of vessels (pores) in wood (xylem). |
|
axillary |
|
position |
|
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. |
|
heterocolpate |
|
architecture |
pollen grain |
Having long, narrow, regularly disposed lacunae (pseudocolpi). |
|
transverse 1 |
|
dehiscence |
|
More or less perpendicular to the central axis. |
|
disarticulating |
|
architecture |
axis |
Articulate(d) and with the main portions of the whole separating at the joints upon maturity or senescence. |
|
flexuose |
|
course |
|
See flexuous. |
|
cochlear |
|
aestivation |
|
Imbricate with one member larger than and exterior to the others, parallel to one that is internal to all the others, strongly incurved, and enclosing the others. |
|
inaperturate |
|
architecture |
pollen grain |
Lacking an aperture of any type. |
|
umbo pl. umbines, umbos |
|
FEATURE |
|
A relatively small, rounded or conical, central protrusion upon an essentially round, broad face. |
|
marcescent |
|
duration |
structure |
Persistent in a distinctly withered condition. |
|
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. |
|
microgametophyte |
|
PLANT |
|
A gametophyte whose fertile organs (gametangia) are all antheridia. |
|
ramal |
|
position |
|
Upon or otherwise directly associated with the stem branches. |
|
convolute 3 |
|
vernation |
|
Each rolled laterally and wholly surrounded by and/or surrounding the one(s) next adjacent. |
|
calyculate 1 |
|
architecture |
capitulum (head) |
With the involucre subtended by a calyculus; in Asteraceae (Compositae). |
|
irregular 2 |
|
course |
|
Deviating asymmetrically from a straight line. |
|
perigynous |
|
insertion |
perianth, calyx, corolla, androecium |
Having its proximal portion adnate to part of the length of the gynoecium, or fused in a separate floral cup that extends part of the length of the gynoecium, the free distal portion thus arising at a level between the base and apex of the gynoecium. See also epigynous, hypogynous. |
|
anadromous |
|
venation |
|
Having the first lateral vein in each pinna or primary segment of the frond arise from its midvein on the side toward the apex of the frond, the pinnule or secondary segment that it leads to often disproportionately larger than the next distal ones. |
|
microphyll |
|
STRUCTURE |
|
A small, lateral, leaf-like enation that, evolutionarily, is not a true leaf, i.e., whose vasculature, if any, consists of only a single median strand not ontogenetically integral with the vasculature of the bearing stem and not associated with leaf gaps in the stele of the stem; in Bryophyta, Psilotophyta, Lycopodiophyta, Equisetophyta. |
