Class: | angiosperms |
Order: | Liliales |
Family: | Melanthiaceae |
Genus: | Veratrum |
Herbar: | list records |
Synonym: | Liliaceae |
Description: | Leaves sessile, folded lengthwise. Flowers in dense paniculate Infloresecnce. Fruits a capsule. |
open map in a new window | |
| species: 2 |
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 Melanthiaceae: herb perennial (i)Living for several to many years, as opposed to annual and biennial inherited by family Melanthiaceae: perennial
|
Size of plant: (i)Attention: use flowering or fruiting specimens to assess plant height (many biennial plants possess only a basal rosette in the first year). | from 600 mm to 1000 mm from 1000 mm to 3000 mm
|
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 Melanthiaceae: no parasite/saprophyte
|
Water or terrestrial plant: (i)Where do the plants grow? | terrestrial (i)Plant grows on dry land example: Orostachys spinosa inherited by family Melanthiaceae: terrestrial
|
Leaf (i)expanded, usually photosynthetic organ of a plant (including phylloclades) | |
Leaf development: (i)Structure and development of leaves. | flattened blade (i)Cross-section of lamina flat, plain common leaf (i)Green, often divided in blade and petiole example: Cotoneaster with green leaves (i)Plant with green leaves inherited by family Melanthiaceae: with green leaves
|
Leaf arrangement: (i)Arrangement of leaves at the stem. | alternate (i)One leaf per node; distiche: arranged in two vertical rows, equitant example: Phragmites
|
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 Melanthiaceae: simple
|
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? | elliptic (including ovate and obovate) (i)Elliptic: broadest at the middle and narrower at the two equal ends; ovate: egg-shaped, attached at the broad end; obovate: attached at the narrower end example: Limosella aquatica
|
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
|
Petiole: (i)Leaf divided into stalk (petiole) and blade. | without (i)Leaves without petiole (stalk), sessile example: Poaceae, Iris
|
Stipule: (i)Leaflets at the base of the petiole, these are smaller and of different shape. | none (i)Without stipules example: Euphorbia, Ericaceae s.l. inherited by family Melanthiaceae: none
|
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 family Melanthiaceae: parallel
|
Flower (i)reproductive portion of the plant, consisting of sepals, petals, stamens, and pistils | |
Flower appearance and pollination: (i)General appearance of the flower. | attractive, animal-pollinated (i)attractive and coloured flowers, mostly large, attracting surely animals example: Trollius, Rosa, Chamaerhodos inherited by family Melanthiaceae: attractive, animal-pollinated
|
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 Melanthiaceae: simple, similar
|
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 Melanthiaceae: radiary, regular (actinomorphic)
|
Flower form: (i)common forms of flowers ? Veronica | simple (flat) - Do not confuse with inflorescences as in some Asteraceae (i)Petals spread out, flower appearing flat example: Mollugo, Trientalis, Pulsatilla, Saxifraga inherited by family Melanthiaceae: simple (flat) - Do not confuse with inflorescences as in some Asteraceae
|
Petal / Tepal number: (i)Number of petal leaves (inner perianth leaves, usually coloured). | 6 (i) example: Allium, Lilium, Dactylorhiza inherited by family Melanthiaceae: 6
|
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 Melanthiaceae: no spur
|
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 Melanthiaceae: 6
|
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 Melanthiaceae: free
|
Pistil number: (i)Number of pistils (female floral organs: style, if developed; stigma and carpels/ovary together build the pistil). | 1 (i)One carpel, but clearly one stigma example: Pyrola, Primula, Alyssum
|
Carpel number: (i)Number of carpels (carpel: forming a simple pistil or part of a compound pistil, modified leaf). | 3
|
Carpel fusion: (i)To which degree are the carpels (modified leaf forming simple pistil or part of a compound pistil) fused. | fused (i)Carpels united into an ovary, only styles are free example: Malus, Berberis
|
Style number: (i)Portion of the pistil connecting the stigma to the ovary. | 3
|
Stigma number per style: (i)Number of stigmas per style. | 1 (i)One stigma, sessile or with a developed style
|
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
|
Sex: (i)Distribution of male and female organs among flowers, only most commonly cases. | bisexual, hermaphrodite (i)All or nearly all flowers of a plant with male and female parts example: Haplophyllum, Chenopodium inherited by family Melanthiaceae: bisexual, hermaphrodite
|
Inflorescence (i)flowering part of a plant, describes the arrangement of the flowers on the flowering axis | |
Inflorescence: (i)Structure of the inflorescence. | Flowers in inflorescence (i)No solitary flowers
|
Appearance: (i)Outer look of the inflorescence. | terminal (i)Inflorescence is the highest point of the plant and may consist of a single flower only example: Cypripedium, Rhaponticum, Ligularia sibirica, Echinops
|
Inflorescence type: (i)Types of inflorescence. Attention: We here ask for the botanical nomenclature of inflorescences, which is sufficiently complicated. Tick only, if you are certain, or tick all inflorescence types that appear similar of these of the plant in question. | panicle (i)Branched, with flowers maturing from the bottom upwards example: Phragmites
|
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. | dry (i)With a dry outer shell, no fleshy parts, but seed (embryo) could be edible inherited by family Melanthiaceae: dry
|
Type of fruit: (i)Common fruit types (including pseudocarp). | Solitary fruits (i) inherited by family Melanthiaceae: Solitary fruits capsule (i)Dry dehiscent fruit, releasing seeds by slits or holes. example: Poppy, most Caryophyllaceae, Cerastium, a lot of Scrophulariaceae, Iris (oppened capsule looks like Delphinium), Zygophyllum - it is a very common fruit type inherited by family Melanthiaceae: capsule Dehiscent fruits (i)Fruits open along a longitudinale line (except silicula) inherited by family Melanthiaceae: Dehiscent fruits
|
Opening of fruit: (i)Mode of dehiscence at maturity to release seeds. | opening / dehiscent (i)Dry? Fruits opening with different types inherited by family Melanthiaceae: opening / dehiscent
|
Shoot/Stem (i)a young stem or branch | |
Spines, thorns or prickles: (i)Shoot with conspicuous spines, thorns or prickles. | absent (i)Stem glabrous or hairy, but never with spines, thornes or prickles example: Gentiana barbata inherited by family Melanthiaceae: absent spines or thornes (i)Sharp pointed woody structure originating from the plant (thornes derived from a reduced branch, spines from leaves) example: Prunus spinosa no in Mongolia inherited by family Melanthiaceae: spines or thornes
|
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 Liliales: homorhizous
|
Runners: (i)Plant must be excavated; shoots, subterranean shoots connected by runners. | short rhizoms (tussocks) (i)Plants grow new shoots immediately beside the old ones, forming dense clusters, called tussocks example: Stipa
|