| Marathrum | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Podostemaceae |
| Genus: | Marathrum Bonpl. |
Marathrum is a genus of flowering plants belonging to the family Podostemaceae. [1]
Its native range is Mexico to Tropical America. [1]
Small to medium-sized stemless herbs known to be attached to roots in only a few species, the sterile plants often larger and coarser than the fertile, with an irregular, sometimes branched, adhesive base. Leaves either distichous or inserted along the margin of the thalloid base, repeatedly pinnate with all the pinnae alter- nate or slightly opposite, or entire with a few lobes along the margin; petiole sometimes fleshy, often dilated at the base. Flowers at first enclosed in a persistent, membranaceous spathe which splits irregularly at the tip, 1 to many, solitary or fascicled between the leaf-bases; pedicel scarcely enlarged at the tip in some species, in others abruptly enlarged; tepals 3-25 in a complete or incomplete whorl, in- conspicuous, squamiform to filiform, inserted on the margin of the receptacle in species with enlarged pedicels, but sometimes inserted at different levels in species with normal or scarcely enlarged pedicels; stamens 2-25, in a complete or incom- plete whorl (the latter unknown in Panamanian species), rarely united at the base, the filaments lanceolate, 3-angled at the base, sometimes branched, nerved, the anthers sagittate, introrse; pollen ellipsoidal to subglobose, 3-sulcate; ovary 2- celled, ellipsoidal, attenuate at the base, with 2 equal carpels, 8-ribbed; placenta of the same shape as the ovary, with many ovules; styles 2, filiform or cylindric, cohering at the base or very rarely free, often emarginate. Fruit with 2 equal, persistent, 5-ribbed valves. [2]
Species: [1]
Pachypodium brevicaule is a species of plant that belongs to the family Apocynaceae.
Podostemaceae, a family in the order Malpighiales, comprise about 50 genera and c. 300 species of more or less thalloid aquatic herbs.
Echinodorus, commonly known as burhead or Amazon sword, is a genus of plants in the family Alismataceae, native to the Western Hemisphere from the central United States to Argentina. Its scientific name is derived from Ancient Greek echius – "rough husk" - and doros – "leathern bottle" - alluding to ovaries, which in some species are armed with persistent styles, forming prickly head of fruit. Some of the species are commonly cultivated in artificial aquatic habitats.
Malus coronaria, also known by the names sweet crabapple or garland crab, is a North American species of Malus (crabapple).
This page provides a glossary of plant morphology. Botanists and other biologists who study plant morphology use a number of different terms to classify and identify plant organs and parts that can be observed using no more than a handheld magnifying lens. This page provides help in understanding the numerous other pages describing plants by their various taxa. The accompanying page—Plant morphology—provides an overview of the science of the external form of plants. There is also an alphabetical list: Glossary of botanical terms. In contrast, this page deals with botanical terms in a systematic manner, with some illustrations, and organized by plant anatomy and function in plant physiology.
Echinodorus grandiflorus is a plant species in the Alismataceae. It is native to Brazil, Paraguay, Uruguay, Argentina, Venezuela and Florida.
Grayia is a genus of plants in the subfamily Chenopodioideae of the family Amaranthaceae. Common names are siltbush and hopsage. The four shrubby species occur in arid and semiarid regions of western North America:
This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology. For other related terms, see Glossary of phytopathology, Glossary of lichen terms, and List of Latin and Greek words commonly used in systematic names.
Erysimum siliculosum is a biennial or perennial herb from Xinjiang, Kazakhstan, Russia, and Turkmenistan, reaching 30-90 cm in height. It is closely related to Erysimum mongolicum. This species inhabits sandy areas and dunes from 400 to 1400 m of altitude.
Adenodaphne is a genus of shrubs and small trees endemic to New Caledonia belonging to the family Lauraceae. The genus is related to Litsea. They have 12 chromosomes.
Extriplex is a plant genus in the subfamily Chenopodioideae of the family Amaranthaceae. It has been described in 2010 and comprises two species, that were formerly included in genus Atriplex. They are restricted to the California Floristic Province.
Goldbachia is a genus of flowering plants belonging to the family Brassicaceae.
Hypericum acmosepalum is a dwarf shrub in Hypericumsect. Ascyreia that is native to China and known as jian e jin si tao locally.
Mairia burchellii is a tufted perennial plant of up to 15 cm (6 in) assigned to the family Asteraceae. It has narrow leaves of up to 5 mm (0.20 in) wide, with single main vein and an entire margin. Flower heads only occur after a fire has destroyed the standing vegetation, mostly in November or between February and June. The flower heads sit individually or with a few on the tip of a purplish stalk, with a few narrow bracts, and consist of a row of pinkish ray florets around many yellow disc florets. It can be found in the southwest of the Western Cape province of South Africa.
Hypericum vacciniifolium is a species of flowering plant in the flowering plant family Hypericaceae. It was first described by August von Hayek and Walter Siehe in the Ann. K. K. Naturhist. Hofmus. journal in 1914 from a specimen collected by Siehe in 1912.
Corsia ornata is a species of flowering plant in the genus Corsia of the small family Corsiaceae, part of the monocot order Liliales. They are saprophytes (Myco-heterotrophs), lacking the ability to photosynthesise, being dependent on other organisms for their nutrition. The plant lives underground, sending up purplish stems above ground in order to flower. The leaves are reduced to scales. One of the six petal-like tepals named the labellum, is specialised, being enlarged and hanging protectively over the reproductive organs. It was discovered in New Guinea in 1875, but has since been sighted in Queensland, Australia.
Pieter van Royen (1923-2002) was a Dutch botanist. He is an author of many papers on the flora of New Guinea.
Zehnderia is a monotypic genus of flowering plants belonging to the family Podostemaceae. It only contains one known species, Zehnderia microgyna.
Itoa is a genus of flowering plants in the family Salicaceae. It is also in the tribe Saliceae.
In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.