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rhizophore |
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STRUCTURE |
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A stem branch that bears no leaves and from which roots eventually arise; esp. in Selaginellaceae. |
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caudex pl. caudices |
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STRUCTURE |
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The short, persistent, thickened, more or less erect, main stem of a perennial plant that otherwise has annual stems. |
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woody-clumping |
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habit |
plant |
Having or developing the character of a woody clump. See also arboreous, arborescent, bushy, frutescent, fruticose, shrubby, subshrubby, suffrutescent, suffruticose, tree-like. |
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extent |
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CHARACTER |
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Reach of the septum or septa within the ovary or fruit, relative to the ovary wall or pericarp and its center. |
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tetradynamous |
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architecture |
flower, androecium |
Diadelphous with four stamens in one set and two in the other. See also didynamous. |
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cyathium pl. cyathia |
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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. |
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polygamous |
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reproduction |
taxon |
Having both bisexual and unisexual flowers, borne on the same or on different plants. |
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fenestrate |
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architecture |
pollen grain |
Having more or less isodiametric, regularly disposed lacunae. |
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obtrulloid |
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solid shape |
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Inversely trulloid. |
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base |
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CHARACTER |
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Configuration of the lowermost or proximal portion of a structure, its extent determined somewhat subjectively in relation to the shape of the structure as a whole. The concept of base varies from one descriptive context to another, since the base is not a clearly delimited, morphologically distinct entity. The terms for describing basal condition are not strictly coordinate logically — some are more inclusive than others, and some describe conditions involving what can be regarded as appendages — and precise characterization may require using more than one descriptor. The semantic antecedent of some descriptors is "base," whereas the antecedent of others is the structure as a whole (e.g., leaf ). |
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opposite 2 |
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arrangement |
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Having the members of each whorl inserted directly above and/or below those of the next adjacent whorl(s). See also antipetalous, antisepalous. |
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scorpioid cyme |
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nominative |
inflorescence |
A cyme in which each axial segment branches to only one side, the successive segments branching alternately to either side, the whole appearing to have a continuous, elongate, straight to zig-zag main axis. See also cincinnus, helicoid cyme (bostryx). |
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flanged |
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solid shape |
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Having a relatively broad circumferential rim or ridge that protrudes laterally. |
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prophyllar |
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insertion |
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Upon or otherwise directly associated with the prophylls (bracteoles, bractlets). |
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stipel |
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STRUCTURE |
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A stipular analogue subtending a leaflet. |
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hysteranthous |
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maturation |
non-floral structure, esp. leaf |
Maturing later than the flowers. |
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semicraspedodromous |
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venation |
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Having a single median primary vein that branches to either side along the length of the lamina, each secondary vein running thence toward and bifurcate near the margin, one branch terminating at the margin, the other upwardly arcuate and merging with the superadjacent secondary vein, thus forming one of a series of marginal loops. |
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divergent |
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arrangement |
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Directed at individually different angles from a common point or relatively limited zone of origin, thus farther apart distally than proximally. |
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…adelphous |
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architecture |
flower, androecium |
Having two or more distinct sets of stamens, the sets differing from one another in the arrangements, insertions, positions and/or morphologies of the included stamens, the number of sets indicated by the prefix, at least one set with two or more members; as in diadelphous, monadelphous, triadelphous. |
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style |
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STRUCTURE |
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A narrow, usually elongate, ontogenetically distal portion of a simple or compound pistil, overtopping the ovary and bearing one or more stigmas; arising from the summit of the ovary, but sometimes apparently from its base at maturity to ontogenetic displacement from its primordial distal position. In a compound pistil the various simple (carpellary) components of the style(s) may not be connate over their entire lengths; the pistil is then regarded as having a branched style or styles. |
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commissure |
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FEATURE |
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Precisely, the joint or common boundary between the facing surfaces of two coherent or mutually appressed structures such as mericarps or stigmas, but traditionally (though imprecisely) applied to such a facing surface itself. |
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branchlet |
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STRUCTURE |
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A branch of the highest or ultimate order. |
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infrabracteal |
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insertion |
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Upon the axis directly below a bract insertion. |
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dyadal |
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arrangement |
pollen |
Cohering and shed in pairs, each tetrad having separated into halves. |
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funicular |
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derivation |
aril |
Produced from or a modification of the funiculus (funicle). |
