| Thelesperma nuecense | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Thelesperma |
| Species: | T. nuecense |
| Binomial name | |
| Thelesperma nuecense B.L.Turner | |
Thelesperma nuecense, the Rio Grande greenthread, [2] is a herbaceous annual flowering plant in the aster family. It is endemic to Texas.
Thelesperma nuecense is an annual herb that grows up to 3 feet tall. [3] The cauline leaves are "scattered over proximal 1/4–1/2(–3/4) of plant heights". [4] It flowers from March to July. There are 8 ray florets per flower head; the laminae are yellow, suffused with a red-brown spot or band. The disc corollas are red-brown, with throats usually shorter than the lobes. The cypselae are 5 to 5.5 mm long; the pappi are 0.5 to 1 mm long. [4]
The species typically flowers from March to July. [4]
Thelesperma nuecense is endemic to Texas, and grows at elevations of 0 to 200 meters from sea level on "disturbed sites on sands". [4] [5]
As of December 2024 [update] , the conservation group NatureServe listed Thelesperma nuecense as Apparently Secure (G4) worldwide. This status was last reviewed on 1 February 1994. [1]
Thelesperma nuecense was first named and described by Billie Lee Turner in 1959 in the journal Rhodora. [6] The species has no registered synonyms in the Plants of the World Online, World Flora Online, and Tropicos databases. [2] [5] [6]
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Ratibida columnifera, commonly known as upright prairie coneflower, Mexican hat, and longhead prairie coneflower, is a perennial species of flowering plant in the genus Ratibida in the family Asteraceae. It is native to much of North America and inhabits prairies, plains, roadsides, and disturbed areas from southern Canada through most of the United States to northern Mexico.
ʻAhakea is a species of flowering tree in the coffee family, Rubiaceae, that is endemic to Hawaiʻi. It inhabits dry, coastal mesic and mixed mesic forests at elevations of 250–580 metres (820–1,900 ft) on the islands of Hawaiʻi and Maui. It is threatened by habitat loss.
Melicope paniculata, the Lihue melicope, is a rare species of tree in the family Rutaceae. It is endemic to the Hawaiian Islands. Like other Hawaiian Melicope, this species is known as alani.
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Allium campanulatum is a species of wild onion known by the common name dusky onion or Sierra onion. This is a flowering plant native to the western United States from southeastern Washington and northern Oregon to southern California, and western Nevada. The dusky onion grows in foothills and mountains, especially in dry areas, such as chaparral habitats.
Allium cratericola is a species of wild onion known by the common name Cascade onion. It is endemic to California, where is an uncommon member of the flora in several of the state's mountain ranges, including the northern and southern California Coast Ranges, the western Transverse Ranges, Klamath Mountains, and the Sierra Nevada foothills. Its range covers much of the state, from Riverside County to Siskiyou County.
Zizia aurea is a flowering herbaceous perennial plant of the carrot family Apiaceae. It is native to eastern Canada and the United States, from the eastern Great Plains to the Atlantic Coast. The genus is named for Johann Baptist Ziz, a German botanist. The common name is based on the similarity to alexanders, another member of the carrot family from coastal areas in Europe and Northern Africa.
Thelesperma megapotamicum is a perennial, herbaceous, flowering plant in the Asteraceae family native to sections of the Americas. It is known by the common names Hopi tea greenthread, rayless greenthread, Navajo tea, cota, and greenthread.
Vernonia missurica, the Missouri ironweed, is a species of magenta-flowered perennial plant from family Asteraceae native to the central and east central United States.
Panax trifolius, commonly called dwarf ginseng, is a plant native to the Northeastern and Appalachian regions of North America. It is found in low mesic woods with acidic soils.
Bidens bidentoides, commonly called swamp beggar's-ticks and delmarva beggarticks, is an annual, herbaceous, flowering plant in the Asteraceae family. It is native to the northeastern and east-central parts of the United States, the coastal plain of the States of Maryland, Delaware, Pennsylvania, and New Jersey plus the region around the Hudson River estuary in New York.
Aristolochia reticulata, the Red River snakeroot, Texas Dutchman's pipe, or Texas pipevine, is a species of perennial herb in the family Aristolochiaceae, and endemic to Arkansas, Louisiana, Oklahoma, and Texas. Its habit is erect to sprawling, up to 0.4 meters in height. It flowers in summer and late spring, and summer and grows in moist, sandy soils.
Ranunculus hispidus is a species of perennial flowering plant in the buttercup family, Ranunculaceae. It is commonly known as bristly buttercup or hispid buttercup. It is a small plant native to central and eastern North America that grows to a height up to 30 cm (1 ft) and has 5-petaled yellow flowers.
Monarda viridissima is a species of flowering plant in the mint family. It is commonly known as green beebalm and Texas beebalm.
Thelesperma simplicifolium, commonly known as the slender greenthread, is a perennial, herbaceous, flowering plant in the Asteraceae family. It is found from Texas and Mexico in openings in oak or juniper woodlands or on desert scrub.
Thelesperma subnudum, commonly known as Navajo tea, is a perennial species of flowering plant in the family Asteraceae. It is found from west central Canada to central United States. It grows in openings in pinyon/juniper or yellow pine forests.
Thelesperma longipes, commonly called the longstalk greenthread, is a perennial herb or subshrub in the Asteraceae family. It is found from Arizona to northeast Mexico.
