foliar |
|
insertion |
|
Upon or otherwise directly associated with the leaves. |
U-form |
|
arrangement |
bundle scars |
Disposed in a truncated elliptical pattern, like the letter U. |
full |
|
extent |
|
Reaching from the ovary wall or pericarp to the center of the ovary or fruit and from the apex to the base of its interior, thus separating adjacent locules completely. |
acicular 1 |
|
plane shape |
|
Very slenderly elongate, widest near the middle, and gradually attenuate to an acute apex and a blunter base; like the lateral outline of a needle. |
rhachilla |
|
STRUCTURE |
|
See rachilla. |
heterosporous |
|
reproduction |
taxon |
Producing two types of spore, microspore and megaspore, which are sexually distinct and usually different in size, each megaspore giving rise to a megagametophyte, each microspore to a microgametophyte. |
rectangular |
|
plane shape |
|
Basically four-sided, the sides more or less straight, those of each opposing pair more or less parallel, the generalized angles between adjacent sides approximately 90°. |
inaperturate |
|
architecture |
pollen grain |
Lacking an aperture of any type. |
husk |
|
STRUCTURE |
|
A more or less dry, hard or fibrous, simple or compound enclosure or outer layer of a seed, fruit or inflorescence. |
secund 1 |
|
architecture |
inflorescence |
Having the pedicels oriented such that the main bodies of all the flowers lie to one side of the bearing axis. |
involucre 2 |
|
STRUCTURE |
|
One or more closely proximate whorls, or a compact spiral, of bracts (phyllaries) surrounding (proximal to) the compound receptacle (torus) and florets of a capitulum (head); in Asteraceae (Compositae). |
shoot 1 |
|
STRUCTURE |
|
Collectively, all those portions of a plant body that are anatomically distinct from the root, the component axes differentiated into nodes and internodes, and branching exogenously from the former. |
septifragal |
|
dehiscence |
fruit |
Splitting through the exterior wall suture(s) but not the septum(-a), the valves of the wall then separating from the septum(-a) and the locules thus opened directly to the outside. |
anthela pl. anthelae |
|
nominative |
inflorescence |
A cyme with the main axis markedly shorter than the lateral axes, appearing generally paniculate when compound; esp. in Juncaceae. |
lumen pl. lumina |
|
FEATURE |
|
A space enclosed by the wall(s) or membrane(s) of a structure. |
spicate |
|
architecture |
inflorescence |
Comprising one or more spikes. |
costal |
|
position |
|
Upon or otherwise directly associated with the costa(e) of a laminar structure. |
androecial tube |
|
STRUCTURE |
|
The tubular portion of an androecium in which the component structures have fused with one another laterally over part or all their lengths. |
lineolate 1 |
|
coloration |
|
Finely lineate, the lines short and often irregularly oriented. |
microphyllous |
|
architecture |
plant |
Bearing microphylls. |
cyathium pl. cyathia |
|
nominative |
inflorescence |
Resembling a single flower, the unbranched axis very short with a terminal pistillate flower and several lateral staminate flowers, the whole subtended and to some degree enclosed by a cupulate envelope of bracts, the flowers diminutive and presumed to be evolutionarily reduced; characteristic of Euphorbia. |
appressed |
|
orientation |
lateral structure |
Angled at or near the base and closely flattened against the surface of the bearing structure, thus more or less parallel to it. |
maturation |
|
CHARACTER |
|
Timing of the attainment of functional maturity, sometimes relative to other structures, sometimes as to constituent structures relative to each other. |
subpetiolar |
|
insertion |
|
Just below the point of petiole insertion. |
diffuse |
|
architecture |
plant, stem |
Having branches remote and divergent to divaricate. |