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craspedodromous, mixed- |
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venation |
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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. |
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prothallus pl. prothalli |
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STRUCTURE |
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A very diminutive thallus that is reproductively mature and undergoes no further growth; in Polypodiophyta, Pinophyta. |
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panicle |
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nominative |
inflorescence |
A compound (branched) raceme, the elongate main axis either determinate or indeterminate, its lateral branches racemose. |
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sepal |
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STRUCTURE |
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One of the one or more constituent members of a calyx; usually green and leaf-like, but sometimes with color and/or texture otherwise, sometimes petaloid; may be distinct or else connate with one or more others and/or may be free or else adnate to one or more other floral structures. |
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umbellate |
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architecture |
inflorescence |
Comprising one or more umbels. |
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gynecandrous |
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reproduction |
taxon |
Monoecious, each inflorescence having a distal sector with only pistillate flowers and a proximal sector with only staminate ones. |
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cryptocotyloid |
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germination |
seed |
Having the cotyledon(s) remaining inside the seed coat. |
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centripetal |
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development |
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Proceeding toward the center, thus more advanced peripherally than centrally within a given frame of reference. |
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leaf scar |
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FEATURE |
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A scar on a twig or stem due to abscission of a megaphyll; having an outline like that of a transverse section through the base of the petiole, sheath, or blade that was inserted there. |
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mammose |
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solid shape |
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Having mammae. |
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false |
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derivation |
indusium |
Constituting a marginal fold of the lamina as a whole and not a distinct enation from the epidermis. |
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asepalous |
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architecture |
flower, perianth |
Lacking sepals. |
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circular |
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arrangement |
bundle scars |
Forming a circle. |
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ligule 2 |
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STRUCTURE |
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An adaxial, distal enation from a leaf sheath, especially in most grasses (Poaceae) and sedges (Cyperaceae); usually unitary and membranous, sometimes instead consisting of a row of ciliate processes. See also hastula. |
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radicle |
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STRUCTURE |
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The primary root, or its primordium, in an embryo; the portion of an embryo axis that develops into the root. |
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filament |
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STRUCTURE |
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The stalk, when present, of a stamen, clearly differentiated from and bearing at its summit an anther. |
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pericolpate |
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architecture |
pollen grain |
Having more than three surficial grooves (colpi) oriented such that some or all of them cross meridians. |
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heteropolar |
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architecture |
pollen grain, spore |
Having morphologically evident polarity, the proximal and distal halves dissimilar. |
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…morphic |
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architecture |
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Existing within the taxon in the number of distinct structural states indicated by the prefix, the states segregated in different sets of plants or not; as in monomorphic, polymorphic, trimorphic. |
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suture |
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FEATURE |
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An evident line of ontogenetic union. |
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motile |
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habit |
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Able to translocate by intrinsic means, as by flagellar propulsion. |
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beard |
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STRUCTURE |
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A growth of relatively long, erect, flexible, capillary trichomes from one or more limited sectors of a structure's surface. |
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husk |
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STRUCTURE |
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A more or less dry, hard or fibrous, simple or compound enclosure or outer layer of a seed, fruit or inflorescence. |
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discal |
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position |
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Upon or otherwise directly associated with the floral disc. |
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plated |
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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. |
