semicraspedodromous |
|
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. |
sorus pl. sori |
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STRUCTURE |
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A cluster of sporangia borne upon a fertile frond, usually on its abaxial surface; often covered during maturation by a protective membrane, the indusium, that is an outgrowth from the epidermis; in Polypodiophyta. |
ligulate 2 |
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architecture |
floret |
Bisexual with a zygomorphic corolla; in Asteraceae (Compositae). |
angled |
|
solid shape |
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Having sides that meet at acute or obtuse angles. |
leaf-opposed |
|
insertion |
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Nodal and directly opposite the leaf. |
mamilla pl. mamillae |
|
STRUCTURE |
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A nipple- or teat-shaped protrusion. |
spinulose |
|
margin |
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Finely spinose. |
akene |
|
nominative |
fruit |
See achene. |
monochasiate |
|
architecture |
inflorescence |
Comprising one or more simple or compound monochasia. See also cincinnate, cymose, cymulose, dichasiate, helicoid-cymose, scorpioid-cymose. |
oblique 1 |
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apex |
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Asymmetric about its longitudinal axis. |
membrane |
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STRUCTURE |
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A relatively thin layer of tissue that covers or separates other, different tissue(s) and/or empty space(s). |
subvalvate |
|
dehiscence |
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Incompletely or partly valvate. |
succulent |
|
texture |
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Herbaceous and juicy, often thickened (incrassate). |
discal |
|
insertion |
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Upon or otherwise directly associated with the floral disc. |
ovule |
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STRUCTURE |
|
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). |
enlarged |
|
size |
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Unusually or unexpectedly large. |
trigamous |
|
reproduction |
inflorescence |
Bearing flowers of three differing sexual constitutions; esp. in Asteraceae (Compositae). |
pilosulous |
|
pubescence |
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Finely pilose. |
calyx pl. calyces |
|
STRUCTURE |
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Collectively, the sepals of a flower, whether distinct or connate; the outer or proximal envelope of a differentiated perianth, whether the other envelope (corolla) is also actually present or is deemed to be secondarily absent due to evolutionary reduction. |
fistulose |
|
solid shape |
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Basically tubular with closed ends. |
perigynous |
|
insertion |
perianth, calyx, corolla, androecium |
Having its proximal portion adnate to part of the length of the gynoecium, or fused in a separate floral cup that extends part of the length of the gynoecium, the free distal portion thus arising at a level between the base and apex of the gynoecium. See also epigynous, hypogynous. |
polygamomonoecious |
|
reproduction |
taxon |
Basically monoecious but with some or all plants bearing some bisexual flowers. |
centralium pl. centralia |
|
FEATURE |
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A central longitudinal cavity within the seed; esp. in Arecaceae (Palmae). |
valvate 1 |
|
aestivation |
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Whorled and with members not overlapping, adjacent members laterally contiguous at their margins. |
planoconvex |
|
solid shape |
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Relatively thin with opposite broad faces, one plane and one convex. |