Class: | angiosperms |
Order: | Asparagales |
Family: | Asparagaceae |
Genus: | Asparagus |
Herbar: | list records |
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| species: 9 |
Habit (i)general appearance of a plant | |
Growth form: (i)Herb, shrub, tree or climber. | herb (i)Herbaceous, erect plant, up to 2m high, mostly with a leafy shoot; if perennial, shoots die to the ground each season, shoots are not woody example: Artemisia pectinata inherited by family Asparagaceae: herb
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Parasite status: (i)Is the plant a half- or full parasite? | no parasite/saprophyte (i)Plant fully autonomous, leaves with chlorophyll example: Most plants, Ranunculus inherited by family Asparagaceae: no parasite/saprophyte
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Water or terrestrial plant: (i)Where do the plants grow? | terrestrial (i)Plant grows on dry land example: Orostachys spinosa inherited by family Asparagaceae: terrestrial
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Leaf (i)expanded, usually photosynthetic organ of a plant (including phylloclades) | |
Leaf arrangement: (i)Arrangement of leaves at the stem. | whorled or fascicled (i)Three or more leaves per node or leaves crowded. example: Galium, Nitraria inherited by family Asparagaceae: whorled or fascicled alternate (i)One leaf per node; distiche: arranged in two vertical rows, equitant example: Phragmites inherited by family Asparagaceae: alternate
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Simple or divided leaves: (i)Are the leaves simple or completely divided in several parts? Blade of the leaf entire or (more or less) deeply dissected. Attention: There are various appearances of the leaf margin (from entire to toothed and lobed). Here, we ignore this and ask only for dissections that separate the leaf for more than one third of its length or width, whatever is smaller. Sometimes, it is difficult to tell apart compound leaves from a shoot system with simple leaves: look for stipulae and/or axillary buds at the ground of the leaves: if only some possess these structures, the others are most likely leaflets of a compound leaf. | simple (i)Non-divided leaf, but margin may be incised nearly to the ground inherited by family Asparagaceae: simple
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Shape of blade: (i)Easy for simple leaves. In compound leaves use the general shape of leaflet. Always check the ground for largest leaves of a plant. To be worked out: how to handle pinnate leaves? | filiform (i)Leaves thread-like, at least more than ten times longer than broad example: Potamogeton pectinatus, P. filiformis inherited by family Asparagaceae: filiform
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Length of leaves: (i)How long is the leaf, be carefull in compound leaves, measure the complete leaf. | from 6 mm to 10 mm inherited by family Asparagaceae: from 11 mm to 20 mm inherited by family Asparagaceae:
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Leaf margin: (i)Structure of leaf margin (or that of a leaflet in case of compound leaves). Attention: Here we ask for the leaf margin, defined as all those dissections that separate the leaf for less than one third of its length or width, whatever is smaller. To be worked out: how to handle margin of pinnate leaves? | entire (i)Plain margin, not toothed example: Iris inherited by family Asparagaceae: entire
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Petiole: (i)Leaf divided into stalk (petiole) and blade. | without (i)Leaves without petiole (stalk), sessile example: Poaceae, Iris inherited by family Asparagaceae: without
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Leaf veination: (i)Arrangement of the main veins of a leaf. | parallel (i)Most veins arranged parallel to the length of leaf, mostly no pronounced main vein (usually in elongate to linear leaves) example: Most Monocotyledonae, Plantago, Veratrum, a lot of Caryophyllaceae looks like that. inherited by order Asparagales: parallel
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Flower (i)reproductive portion of the plant, consisting of sepals, petals, stamens, and pistils | |
Perianth arrangement: (i)Attention: in some plants, flowers may be dimorphic in different ways (dioecious or gynodioecious). If flowers vary, record the characters of the most showy flowers. | simple, similar (i)Only one type of perianth leaves (tepals) example: Tulipa inherited by family Asparagaceae: simple, similar
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Flower symmetry: (i)Symmetry of the perianth leaves. Attention: to assess this character, look on sepals, petals and stamens, but neglect carpels and ovary. | radiary, regular (actinomorphic) (i)More than two axis of symmetry example: Saxifraga: 5; Iris: 3 inherited by family Asparagaceae: radiary, regular (actinomorphic)
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Petal / Tepal fusion: (i)To which degree are the petal leaves connected? Petals sympetalous. | free (i)all petal leaves separate from each other example: Anthriscus inherited by family Asparagaceae: free
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Spur: (i)A hollow, slender, sac-like appendage of the perianth leaves, storing nectar. | no spur (i)Flower without appendage example: Peganum inherited by family Asparagaceae: no spur
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Stamen number: (i)Attention: We ask for the reproductive organs of the flower dispersing pollen. Count only fully fertile stamens, not staminodia (e.g. Parnassia). | 6 (i) example: Veratrum, Smelowskia, Juncus inherited by family Asparagaceae: 6
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Stamen fusion: (i)To which degree are the stamens fused? Attention: Whereas the pollen sacs itself are often free., their stalks (filaments) may be fused. Here, we count them as fused if they are together over at least one thirth of their length. | free (i)Stamens with separate bases example: Malus inherited by family Asparagaceae: free
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Ovary position: (i)For entirely or partly fused carpels, describe their position in relation to the insertion point of perianth leaves (best done by doing a longitudinal section of a flower). | superior (hypogynous) (i)Base of carpels attached above insertion point of perianth leaves, carpels free or fused example: Delphinium, Anemone inherited by family Asparagaceae: superior (hypogynous)
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Fruit (i)the seed bearing organ, with or without adnate parts; a ripened ovary and any other structures which are attached and ripen with it. Aggregate fruits are handled like simple fruits for determination. | |
Consistency: (i)Fleshy fruits or dry fruits, see dispersal adaptations for further classification. | fleshy (i)Usually non dehiscent; with a fleshy (swollen because of a high water content) outer shell, flesh edible at least for animals example: Prunus, Amygdalus, Malus inherited by family Asparagaceae: fleshy
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Type of fruit: (i)Common fruit types (including pseudocarp). | Indehiscent fruits inherited by family Asparagaceae: Indehiscent fruits Solitary fruits (i) inherited by family Asparagaceae: Solitary fruits berry (i)Fleshy fruit with several to many seeds in the flesh example: Tomato inherited by family Asparagaceae: berry
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Opening of fruit: (i)Mode of dehiscence at maturity to release seeds. | not opening / indehiscent (i)Fruits remain closed at maturity and disperse with seeds inside example: Corylus (nut), Vaccinium (berry) inherited by family Asparagaceae: not opening / indehiscent
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Size of fruit: (i)Size of the fruit including appendage. | from 5 mm to 10 mm (i) example: Silene: small capsule opening with teeth inherited by family Asparagaceae:
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Seed number: (i)Estimate the number of seeds per fruit, if recognizable seeds are in the fruit (in rare cases a fruit may contain one seeded nuts: rose hip, carex). | 7-50 (i)Numerable, but may be counted example: Vaccinum: multi-seeded berry, Ptilotrichum: few-seeded siliqua inherited by family Asparagaceae: 7-50
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Root / shoot below ground (i)plant part below ground (in most cases), including below ground shoots, without leaves | |
Root type: (i)Organisation of the roots. | homorhizous (i)Many equal roots example: Monocotyledonae inherited by order Asparagales: homorhizous
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Storage in below-ground structures: (i)Rhizomes or bulbs. | storage rhizomes (i)Horizontal, root like structures with scale leaves or their scars, these clearly thicker than the bases of above-ground shoots example: Petasites, Iris inherited by family Asparagaceae: storage rhizomes
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