plated |
|
relief |
bark |
Fissured in a more or less regular, anastomosing pattern with distinct, relatively large, undisturbed sectors intervening, the latter ultimately falling away more or less intact after attaining considerable thickness. |
thallus 2 pl. thalli |
|
STRUCTURE |
|
The main body of a gametophyte, bearing rhizoids, gametangia (antheridia and/or archegonia), and/or gemmae cups; usually thin and more or less planate, inconspicuous, and growing appressed to or beneath the substrate surface; in Psilotophyta, Lycopodiophyta, Equisetophyta, Polypodiophyta. See also prothallus. |
contractile |
|
architecture |
structure |
Diminishing in length, or acquiring the potential energy for a sudden decrease, due to the generation of internal tension during tissue development. |
inflorescence 2 |
|
STRUCTURE |
|
The basic architectural unit of the flower-producing portion of a plant; comprising one or more flowers, their associated supporting axes (peduncles, main axes, branches and pedicels), if any, and the appendages thereto (bracts, bractlets or bracteoles or prophylls, involucres, involucels, and glumes), if any; delimited by the insertion or gradation of a single peduncle, peduncle cluster, pedicel, pedicel cluster, or sessile flower, as the case may be, directly upon or into some proximal vegetative structure not of one of these types; depending upon the type(s) of flowers included, may be bisexual (all flowers bisexual), staminate (all flowers staminate), pistillate (all flowers pistillate), sterile (all flowers sterile), or mixed (two or more types of flowers present); most appropriately described using nominative terms. |
antheridium pl. antheridia |
|
STRUCTURE |
|
A male gametangium; a multicellular fertile organ of a mature gametophyte within which male gametes (antherozoids, spermatozoids) are produced and from which they are discharged, in some taxa forcibly, through a pore. Technically present but highly reduced and of no descriptive significance in Magnoliophyta and part of Pinophyta. |
winter annual |
|
nominative |
plant |
Annual, germinating in autumn, overwintering in a vegetative state (usually as a rosette aboveground), reproducing sexually from early spring through summer, and dying promptly thereafter. See also summer annual. |
ventrifixed |
|
fixation |
|
Attached on the adaxial side well above the base. |
acrocaulous |
|
position |
|
At or very near the stem tip. |
perennial 1 |
|
duration |
plant |
Normally living more than two years, with no definite limit to its life span. |
ligule 1 |
|
STRUCTURE |
|
A strap-shaped enation from or distal portion of a structure. |
internodal |
|
insertion |
|
Upon or otherwise directly associated with the internodes. |
colporate |
|
architecture |
pollen grain |
Having one or more elongate, relatively narrow and shallow depressions (colpi), each containing a pore. |
watery |
|
texture |
|
Liquid and weakly cohesive, flowing freely; like water. This term often implies also transparency. |
dorsifixed |
|
fixation |
|
Attached on the abaxial side well above the base. |
subtending |
|
insertion |
|
Arising from the axis just below and very near to the base of some other specified lateral structure. This term is meaningless if the structure that is subtended is not indicated. |
ramentaceous |
|
pubescence |
|
Of small, fragile, scarious, planate trichomes. |
craspedodromous, mixed- |
|
venation |
|
Having a midvein that branches to either side along the length of the lamina, the secondary veins running thence toward the margin, some becoming indistinct before reaching it, others terminating there. |
spicy |
|
odor |
|
Pleasantly pungent, reminiscent of spices. |
anchoring |
|
habit |
trichome |
Serving as a means of attachment to some external support. |
suprabasal |
|
position |
|
Just above the base of the structure in point. |
hirsute |
|
pubescence |
|
Bearing coarse, rough, elongate, more or less erect, capillate trichomes. See also hirtellous. |
dilate(d) |
|
solid shape |
elongate structure |
Narrow at one end and broadening toward the other; esp. when essentially terete at the narrow proximal end and seemingly flattened distally, as some anther filaments. |
cuboid |
|
solid shape |
|
Generally but not strictly cubic; more or less equilaterally six-sided, each side basically square. |
stephanoporate |
|
architecture |
pollen grain |
Having more than three pores disposed equatorially. |
resinous 1 |
|
coating |
|
Of liquid or hardened resin. |