Algae, Tree, Herbs, Bush, Shrub, Grasses, Vines, Fern, Moss, Spermatophyta, Bryophyta, Fern Ally, Flower, Photosynthesis, Eukaryote, Prokaryote, carbohydrate, vitamins, amino acids, botany, lipids, proteins, cell, cell wall, biotechnology, metabolities, enzymes, agriculture, horticulture, agronomy, bryology, plaleobotany, phytochemistry, enthnobotany, anatomy, ecology, plant breeding, ecology, genetics, chlorophyll, chloroplast, gymnosperms, sporophytes, spores, seed, pollination, pollen, agriculture, horticulture, taxanomy, fungi, molecular biology, biochemistry, bioinfomatics, microbiology, fertilizers, insecticides, pesticides, herbicides, plant growth regulators, medicinal plants, herbal medicines, chemistry, cytogenetics, bryology, ethnobotany, plant pathology, methodolgy, research institutes, scientific journals, companies, farmer, scientists, plant nutrition
Select Language:
 
 
 
 
Main Menu
Please click the main subject to get the list of sub-categories
 
Services offered
 
 
 
 
  Section: Kingdom Plantae » Famalies
 
 
Please share with your friends:  
 
 

Family Anemarrhenaceae

 
     
 

Anemarrhenaceae Conran, M.W. Chase & Rudall

~ Agavaceae, Anthericaceae

Habit and leaf form. Herbs. Perennial; with a basal aggregation of leaves; shortly rhizomatous. Leaves alternate; spiral (?); sheathing; with ‘normal’ orientation; simple. Lamina entire; grass-like, linear; parallel-veined; without cross-venules (?). Lamina margins entire. Leaves with a persistent basal meristem, and basipetal development.

Leaf anatomy. Lamina dorsiventral.

Stem anatomy. Secondary thickening absent.

Reproductive type, pollination. Fertile flowers hermaphrodite. Plants hermaphrodite (with the supposedly dioecious Terauchia representing a smut-induced monstrosity).

Inflorescence, floral, fruit and seed morphology. Flowers aggregated in ‘inflorescences’; in panicles (these condensed, spicate). Inflorescences terminal; terminal, erect, pedunculate, leafy, spicate condensed panicles. Flowers small; regular; 3 merous; tetracyclic. Perigone tube present (the tepals connivent into a short tube, the narrow, 3-nerved segments spreading).

Perianth of ‘tepals’; 6; joined (the segments free above the perigone tube); 2 whorled; isomerous; sepaloid to petaloid (?); similar in the two whorls; green to white, or purple, or brown (with brownish veins); persistent; non-accrescent.

Androecium 3. Androecial members adnate (to the inner segments); all equal; free of one another; 1 whorled. Androecium exclusively of fertile stamens. Stamens 3; isomerous with the perianth; oppositiperianthial (attached to the middle of the inner perianth segments); filantherous (the filaments short and flat). Anthers dorsifixed (linear); versatile; dehiscing via longitudinal slits; introrse. Microsporogenesis successive.

Gynoecium 3 carpelled. Carpels isomerous with the perianth. The pistil 3 celled (and 3-angled). Gynoecium syncarpous; eu-syncarpous; superior. Ovary 3 locular; sessile. Gynoecium shortly stylate. Styles 1 (filiform); apical. Stigmas 1 (small); capitate (small). Placentation basal to axile. Ovules 2 per locule; ascending; collateral; non-arillate; anatropous.

Fruit non-fleshy; dehiscent; a capsule (sub-globosse to triquetrous). Capsules loculicidal. Dispersal unit the seed. Fruit 3–6 seeded (1–2 per locule). Seeds endospermic (endosperm fleshy); fusiform-triangular. Seeds without starch. Cotyledons 2. Embryo cylindric. Testa encrusted with phytomelan; black.

Seedling. Hypocotyl internode absent. Cotyledon hyperphyll elongated; more or less circular in t.s. Coleoptile absent. Primary root persistent.

Geography, cytology. Holarctic, or Paleotropical. North China.

Taxonomy. Subclass Monocotyledonae. Dahlgren et al. Superorder Liliiflorae; Asparagales. APG 3 core angiosperms; Superorder Lilianae; non-commelinid Monocot; Order Asparagales (as a synonym of Asparagaceae).

Species 1. Genera 1; Anemarrhena only.

Conran et al. (1997): description insufficiently detailed, and inadequately cross-referenced with Anthericaceae.

Economic uses, etc. Cultivated ornamental.

 
     
 
 
     



     
 
Copyrights 2012 © Biocyclopedia.com | Disclaimer