fastigiate |
|
arrangement |
branches |
Closely parallel to one another and to the axis of origin over most of their lengths. |
linear 1 |
|
arrangement |
bundle scars |
Disposed in a more or less straight line. |
pseudomonadal |
|
arrangement |
pollen |
Apparently monadal but each grain actually comprising an unseparated original tetrad in which the contiguous walls between component grains have dissolved. |
clustered 1 |
|
arrangement |
|
Disposed in one or more aggregates, the members of each inserted close together, thence widely divergent from one another. |
U-form |
|
arrangement |
bundle scars |
Disposed in a truncated elliptical pattern, like the letter U. |
…ranked |
= …stichous |
arrangement |
|
Disposed along the axis in the number of distinct ranks indicated by the prefix; as in two-ranked. |
pollinial |
|
arrangement |
pollen |
Polyadal with the grains of individual thecae (pollen sacs), or of fused thecae, compacted and forming tightly coherent masses (pollinia) that constitute the basic dispersal units, these sometimes distally attenuate to a sterile caudicle (translator arm), sometimes united by caudicles in groups of two or more, the caudicle(s) sometimes attached to a viscidium, either directly or through an intervening stipe; esp. in Asclepiadaceae, Orchidaceae. |
contiguous |
|
arrangement |
|
Touching one another. |
diplecolobal |
|
arrangement |
cotyledons |
Incumbent but with the cotyledons folded together twice or more, the folds transverse. |
spirolobal |
|
arrangement |
cotyledons |
Incumbent and folded together transversely. |
imbricate(d) 2 |
= overlapping |
arrangement |
planate structures |
Overlapping one another laterally and/or longitudinally. |
polyadal |
|
arrangement |
pollen |
Shed in groups of more than four, each group comprising grains from two or more original tetrads, the latter intact or not. |
sheathing 2 |
|
base |
laminar structure |
Terete or involute and closely enclosing the supporting axis for some distance above the point of insertion. |
arrowhead-shaped 1 |
= sagittate |
base |
laminar structure |
Having two retrorse, generally triangular lobes, one to either side. |
oblique 1 |
|
base |
|
Asymmetric about its longitudinal axis. |
cordate 1 |
= heart-shaped |
base |
laminar structure |
Having two equal, more or less rounded, retrorse lobes, one to either side, overlapping or not, the intervening sinus relatively deep. |
heart-shaped 1 |
= cordate |
base |
laminar structure |
Having two equal, more or less rounded, retrorse lobes, one to either side, overlapping or not, the intervening sinus relatively deep. |
concave-tapered 2 |
= attenuate |
base |
|
Gradually diminishing in width or diameter toward the proximal end, the sides longitudinally concave. Corresponds with acuminate for apex shape. |
wedge-shaped 1 |
= cuneate, obtriangular |
base |
laminar structure |
Attenuate with the sides more or less straight and intersecting at an acute angle. |
halberd-head-shaped 1 |
= hastate |
base |
laminar structure |
Having two generally triangular lobes, one to either side, oriented more or less perpendicular to the central axis. |
calcarate |
= spurred |
base |
|
Having a relatively slender protrusion resembling a spur. |
sagittate 1 |
= arrowhead-shaped |
base |
laminar structure |
Having two retrorse, generally triangular lobes, one to either side. |
caudate 2 |
= tailed |
base |
|
With one or more relatively slender, retrorse basal enations or appendages. |
spurred |
= calcarate |
base |
|
Having a relatively slender protrusion resembling a spur. |
tailed 2 |
= caudate |
base |
|
With one or more relatively slender, retrorse basal enations or appendages. |