Silver fern (Pityrogramma calomelanos)

akis perak or silver fern (Pityrogramma calomelanos) is a plant species in Pteridaceae, shrub fern, short and erect rhizomes, dark brown woody stems, grows in rocky or sandy soil, stems have smooth rhizomes, spread and are covered by side scales.

P. calomelanos has small cylindrical stems and fibrous roots. Black petiole. Single leaf is green, simple, pinnate or compound, jagged, pointed end and pinnate. Ental double pinnate, alternating and covered with silver flour.

Sexual reproduction uses spores in male and female gametes, while asexuals go through division. Three varieties recorded are Pityrogramma calomelanos var. aureoflava, Pityrogramma calomelanos ssp. austroamericana and Pityrogramma calomelanos var. calomelanos.

Silver ferns grow in open areas on rocky and sandy soils on slopes, often found on the banks of open or protected rivers, flourishing well on highlands up to 1200 meters. Generally live in tight or loose groups that cover an area.

Kingdom: Plantae
Phylum: Tracheophyta
Class: Polypodiopsida
Subclass: Polypodiidae
Order: Polypodiales
Family: Pteridaceae
Subfamily: Pteridoideae
Genus: Pityrogramma
Species: Pityrogramma calomelanos
Varieties: Pityrogramma calomelanos var. aureoflava, Pityrogramma calomelanos ssp. austroamericana, Pityrogramma calomelanos var. calomelanos

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Bush sorrel ( Hibiscus surattensis ) is a plant species in Malvaceae, annual shrub, crawling on the surface or climbing, up to 3 meters long, thorny stems, green leaves, yellow trumpet flowers, grows wild in forests and canal edges, widely used for vegetables and treatment. H. surattensis has stems with spines and hairs, branching and reddish green. Petiole emerges from the stem with a straight edge to the side, up to 11 cm long, sturdy, thorny, hairy and reddish green. The leaves have a length of 10 cm, width of 10 cm, 3-5 lobed, each has a bone in the middle with several pinnate veins, sharp tip, sharp and jagged edges, wavy, stiff, green surface. Flowers up to 10 cm long, trumpet-shaped, yellow with a purple or brown or red center, solitary, axillary. Epicalyx has forked bracts, linear inner branches, spathulate outer branches. Stalks up to 6-7 cm. The seeds have a length of 3-3.5 mm and a width of 2.5 mm. Bush sorrels grow in pastures, marshes, abandoned fields and plantations, ...

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