Smartweed (Persicaria barbata)

Smartweed (Persicaria barbata) is a species of plant in the Polygonaceae, low shrub, erect or creeping stems, elongated leaves, flowers and fruit in panicles, growing in moist or stagnant places on the banks of rivers, swamps, forests and agricultural land.

P. barbata has a cylindrical stem, dark green or red in color, has petiole-like borders forming internodes that allow aerial roots to grow to form separate shoots.

The leaves sit opposite, elongated, slender base, pointed tip, white hair, green upper surface with dark V-shaped markings, a large vein in the middle with many small pinnate veins.

Small flowers in panicles, white, growing in rows on long stalks at the end of the stem, erect and blooming all season. Smartweed grows to form colonies in places close to water or stagnant.

Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Caryophyllales
Family: Polygonaceae
Subfamily: Polygonoideae
Tribe: Persicarieae
Subtribe: Persicariinae
Genus: Persicaria
Species: Persicaria barbata

A deep-sea isopod Bathyopsurus nybelini adapted to feed submerged Sargassum algae

NEWS - Incredible footage shows a marine species, Bathyopsurus nybelini , feeding on something that sinks from the ocean’s surface. Researchers using the submersible Alvin found the isopod swimming 3.7 miles down using its paddle-like legs to catch an unexpected food source: Sargassum. Researchers from Woods Hole Oceanographic Institution (WHOI), the University of Montana, SUNY Geneseo, Willamette University and the University of Rhode Island found the algae sinking, while the isopod waited and adapted specifically to find and feed on the sinking nutrient source. The Sargassum lives on the surface for photosynthesis. The discovery of a deep-sea animal that relies on food that sinks from the waters miles above underscores the close relationship between the surface and the deep. “It’s fascinating to see this beautiful animal actively interacting with sargassum, so deep in the ocean. This isopod is extremely rare; only a handful of specimens were collected during the groundbreaking Swedis...

Pink poui (Tabebuia rosea)

Pink poui ( Tabebuia rosea ) is a species of plant in the Bignoniaceae, a small neotropical tree, growing up to 30 meters tall and up to 100 cm in diameter. It has layered and irregular branches, with gray to brown bark and vertical fissures. The leaves are compound, finger-shaped, five-petaled, length up to 33 cm, width up to 15 cm and long stalk up to 9 cm. The flowers are large, bright red or purple or white, fan-shaped, up to 9 cm long, up to 8 cm wide. The fruit capsule is slender and up to 35 cm long. The fruit dries and dehisces, producing anemochorous seeds with hyaline membrane wings. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Lamiales Family: Bignoniaceae Genus: Tabebuia Gomes ex DC. in Biblioth. Universelle Genève, n.s., 17: 130 (1838) Species: Tabebuia rosea (Bertol.) DC. in Prodr. 9: 215 (1845) HOMOTYPIC SYNONYMS Couralia rosea (Bertol.) Donn.Sm. in Bot. Gaz. 20: 9 (1895) Sparattosperma roseum (Bertol.) Miers in Proc....

Hairy senna (Senna hirsuta)

Hairy senna ( Senna hirsuta ) is a species of plant in the Fabaceae family. It is an upright shrub, growing up to 2.5 meters tall. The leaves are compound on petioles up to 13 cm long. They usually have 2-6 pairs of leaflets, are egg-shaped, and have white hairs, up to 10 cm long and 5 cm wide. The flowers are yellow and arranged at the tips of branches and in the upper leaf axils in clusters of 2-5. The petals are 12-16 mm long, have 6 stamens, 3-8 mm long anthers, and 4 staminodes. Flowering occurs almost monthly. The pods are cylindrical, up to 15 cm long, 4-6 mm wide, and curved. TAXON Kingdom: Plantae Phylum: Tracheophyta Subphylum: Angiospermae Class: Magnoliopsida Order: Fabales Family: Fabaceae Subfamily: Caesalpinioideae Tribe: Cassieae Subtribe: Cassiinae Genus: Senna Mill. in Gard. Dict. Abr., ed. 4.: [s.p.] (1754) Species: Senna hirsuta (L.) H.S.Irwin & Barneby in Phytologia 44: 499 (1979) Variety: Senna hirsuta var. acuminata (Benth.) H.S.Irwin & Barneby, Senna ...

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