Noveloa
Noveloa | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Malpighiales |
Family: | Podostemaceae |
Genus: | Noveloa C.T.Philbrick |
Species | |
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Noveloa is a genus of aquatic flowering plants in the family Podostemaceae. Species of the genus are distributed across north and west Mexico in seasonally dry tropical areas,[1] and plants are found in shallow, clear, fast-flowing rivers.[2]
Taxonomy
Noveloa was formally described in 2011 by C. Thomas Philbrick, and was named in honor of Alejandro Novelo Retana, an aquatic angiosperm researcher. It was split from the genus Oserya and is composed of two Central American species: Noveloa coulteriana and Noveloa longifolia.[3]
Species
Noveloa coulteriana was originally described as Oserya coulteriana in 1849 by Edmond Tulasne and is the type species of the genus. Noveloa longifolia was originally described as Oserya longifolia in 1995 by Philbrick and Retana.[3] It is found only in the states of Jalisco and Colima.[4]
Description
Noveloa shares most of its characteristics with Oserya, but varies in a few key ways. The
Species in the genus are
The flowers are bilaterally symmetrical and are
There are several ways to tell N. longifolia from N. coulteriana. The former is larger, with longer leaves but shorter petals. The leaf stem of N. longifolia is circular in cross-section and has visible spines, while in N. coulteriana it is flattened and does not have spines.[5]
Ecology
When N. coulteriana seeds are moistened, they secrete a sticky mucus substance before they germinate. They require rich red light to germinate, but are inhibited by far-red light. The seeds are incapable of becoming dormant; as such, they remain viable for less than six months. However, they do have a high rate of sprouting. This style of reproduction is different from other Mexican species of the family, like Marathrum foeniculaceum, M. plumosum, and Tristicha trifaria. Because of increasing pollution in the rivers, more of the light that the plants receive is far-red light, which could reduce germination of the species.[2]
References
- ^ "Noveloa C.T.Philbrick | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2023-10-14.
- ^ ISSN 0304-3770.
- ^ S2CID 52203995.
- ^ "Noveloa longifolia (Novelo & C.T.Philbrick) C.T.Philbrick". Plants of the World Online. Kew Science. Retrieved 2023-10-14.
- JSTOR 3391834.