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microphyll |
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STRUCTURE |
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A small, lateral, leaf-like enation that, evolutionarily, is not a true leaf, i.e., whose vasculature, if any, consists of only a single median strand not ontogenetically integral with the vasculature of the bearing stem and not associated with leaf gaps in the stele of the stem; in Bryophyta, Psilotophyta, Lycopodiophyta, Equisetophyta. |
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peripheral |
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insertion |
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Upon or otherwise directly associated with the outer surfaces or regions of a three-dimensional structure. Although use of this term in two-dimensional contexts is technically correct, traditionally the term marginal is preferred in such cases. |
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calyculate 2 |
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architecture |
flower |
Subtended by a calyculus (epicalyx). |
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isodiametric |
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architecture |
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Of approximately constant breadth in all median planes. |
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replicate |
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vernation |
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Each with the distal portion of its blade recurved, paralleling and contiguous with the proximal portion. |
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symbiotic |
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nutrition |
plant |
Partially dependent for essential nourishment upon other living organisms that derive some reciprocal benefit from the relationship. |
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anthela pl. anthelae |
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nominative |
inflorescence |
A cyme with the main axis markedly shorter than the lateral axes, appearing generally paniculate when compound; esp. in Juncaceae. |
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cotyliform |
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solid shape |
perianth, calyx, corolla |
Having a short, relatively broad, cupulate tube and a well differentiated, erect limb. See also cyathiform, urceolate (urn-shaped). |
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spike |
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nominative |
inflorescence |
An elongate, determinate or usually indeterminate axis bearing sessile flowers inserted singly along it, unbranched or sometimes bearing lateral branches of the same nature. |
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weak |
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texture |
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Very pliable and unresilient. |
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erect |
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orientation |
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Perpendicular to the horizon or to the general plane of a bearing structure. |
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ridged |
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solid shape |
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Having one or more ridges; esp. fruits of Apiaceae (Umbelliferae). |
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appressed |
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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. |
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gynaecium |
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STRUCTURE |
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See gynoecium. |
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zygomorphic |
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architecture |
perianth, calyx, corolla |
Bilaterally symmetric; divisible into two essentially equal portions along only one median logitudinal plane. |
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faceted |
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solid shape |
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Having numerous, relatively small, flat or shallowly curved portions of the external surface that are bounded by more or less distinct angular discontinuities in that surface. |
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haustorium pl. haustoria |
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STRUCTURE |
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An absorbing and anchoring organ, often root-like, excrescent from a vegetative part of a parasitic or hemiparasitic plant, by which the plant communicates intimately with and derives sustenance and support from its host plant, into whose tissues the haustorium intrudes. |
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obdeltate |
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plane shape |
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Approximately equilaterally triangular, broadest distally, and regularly attenuate to an angular base; inversely deltate; equilaterally cuneate. |
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cymule |
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nominative |
inflorescence |
A diminutive cyme, with few flowers, few or no branches, and short axes. |
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porous |
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porosity |
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Having vessels present. |
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staminodial |
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insertion |
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Upon or otherwise directly associated with the staminodes. |
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transverse 2 |
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orientation |
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Perpendicular to the long axis of the context of reference. |
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axis pl. axes |
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STRUCTURE |
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Any unitary and longitudinally continuous structure that bears laterally the subordinate portion(s), if any, of a plant root or shoot or any subdivision thereof and that represents the main line of structural development and/or symmetry distal to its origin, irrespective of the particular ontogenetic growth pattern involved. See also primary axis. |
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heterogamous |
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reproduction |
plant, inflorescence |
Having flowers that differ distinctly in size, shape and/or constitution. |
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disc 1 var. disk |
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STRUCTURE |
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Any distinct, annular to discoid structure produced from or borne upon a floral receptacle between or basal to any of the sets of floral organs; usually fleshy, often nectariferous. |
