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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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ovule |
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STRUCTURE |
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A complex reproductive structure borne by a seed-plant sporophyte, consisting of outer, sporophytic tissues that enclose a haploid, gametogenic tissue usually regarded as a highly reduced megagametophyte. Following fertilization, the entire structure matures to become a seed that contains an embryo, the first stage of the next sporophytic generation. Ovules (and seeds) are borne naked on megasporophylls (in Pinophyta) or within an ovary (in Magnoliophyta). |
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sectile |
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architecture |
pollinium |
Having partially separated sectors, as though cut. |
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tuberous 2 |
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architecture |
structure |
Resembling a tuber in shape and texture, but not ontogenetically such; esp. roots. |
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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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loose 2 |
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texture |
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Soft overall, discontinuously and only weakly cohesive. |
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pseudomonadal |
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arrangement |
pollen |
Apparently monadal but each grain actually comprising an unseparated original tetrad in which the contiguous walls between component grains have dissolved. |
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coleorhiza |
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STRUCTURE |
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A sheath-like structure enclosing the radicle (embryonic root) in an embryo; esp. in Poaceae (Gramineae). |
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inconspicuous |
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manifestation |
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Not prominently evident. |
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septicidal |
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dehiscence |
fruit |
Splitting longitudinally into or through the suture(s) in the outer wall and, if present, through the septum(-a) between locules, the latter thus opened indirectly to the outside. |
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unbranched 2 |
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architecture |
laminar veinlet |
Not branching within the areole. |
|
aggregate fruit |
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nominative |
fruit |
Compound and derived from the two or more simple, superior ovaries of a single apocarpous flower; the ovaries connate, coherent, or contiguous in the fruit, the whole with or without accessory tissue. |
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massula pl. massulae |
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STRUCTURE |
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A body of coherent pollen grains, dispersed as a unit; esp. in Asclepiadaceae, Orchidaceae. |
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bud-scale scar |
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FEATURE |
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A scar on a stem due to abscission of a bud scale. The scar(s) encircle(s) the axis to which the bud was terminal, each single scar having an outline like that of a transverse section through the base of the bud scale that was inserted there. Sets of bud scale scars (one set per bud) usually delimit seasonal stem growth increments in temperate zone taxa. |
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integument |
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STRUCTURE |
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A distinct layer of tissue that encloses and serves to protect the other tissues of an organ, especially a seed. |
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androdioecious |
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reproduction |
taxon |
Having some plants with only bisexual flowers and others only staminate ones. |
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microspore |
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STRUCTURE |
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A male spore; a spore of the smaller of the two types produced by the sporophytes of a heterosporous taxon; produced in a microsporangium; giving rise upon germination to a microgametophyte. |
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rank |
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FEATURE |
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A sequence of lateral structures arising from the same axis at successive points along its length and diverging from it in the same direction. |
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superaxillary |
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insertion |
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Internodal but close to and directly above the axil(s). |
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calyptrate |
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architecture |
|
Having or constituting a calyptra. |
|
isostemonous |
|
architecture |
flower, androecium |
Having the stamens essentially alike in size and shape. |
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persistent |
|
duration |
structure |
Remaining attached and conspicuous until the bearing structure reaches maturity. |
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smooth 1 |
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relief |
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Even or unrelieved overall. Strictly applied, this term refers only to the surface proper; however, it is often used to mean glabrous as well. |
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antheridium pl. antheridia |
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STRUCTURE |
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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. |
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glochidiate |
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pubescence |
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Bearing glochids (glochidia). |
