Author:
Qjure
Book:
Qjurious
Type:
Info
Chapter:
3-644.21.00
Linaceae
English: Lineseed family.
French: Linacees.
Botany: 14 genera; ± 250 species; cosmopolitan; leaves simple; hermaphroditic, actinimorphic flowers; temperate, tropical; Eurasia, Africa, Australia, Americas.
Culture: Sleeping Beauty.
Taxonomy
In the Apg3 classification Linaceae is a Family in the Order Malpighiales.
In the Cronquist classification exist the order Linales, including Linaceae, Hugoniaceae, Humiriaceae, Ixonanthaceae and Erythroxylaceae. These Families have common characteristics. The Reveal and Thorne classification have a similar oredr Linales, including also Ctenolophonaceae and Zygophyllaceae.
In the Plant theory Linaceae is placed in Suphase 1.
Hugoniaceae, Humiriaceae and Ixonanthaceae are small families, that we do not have homeopathic information of. In the Apg3 classification Hugoniaceae is included in Linaceae and the other two Families are standing on their own in the Order Malpighiales, not having clear links. Tentatively these families are included in Linaceae in the Plant theory.
Included families
Humiriaceae: trees; neotropical; 8 genera; ± 50 species.
Genera: Duckesia, Endopleura, Humiria = Houmiria, Humiriastrum
Hylocarpa, Sacoglottis, Schistostemon, Vantanea.
Ixonanthaceae: trees; neotropical; broadleaf, evergreen; 5 genera; 30 species.
Genera: Allantospermum, Cyrillopsis, Ixonanthes, Ochthocosmus,Phyllocosmus.
Botany
Trees, shrubs, rarely herbs; branches sometimes climbing by hooks.
Leaves: simple; alternate or opposite; stipules present or absent, sometimes gland-like
Flowers: actinomorphic, hermaphrodite; sepals 4–5, free or partly united, imbricate; petals free, contorted, fugacious; stamens as many as and alternate with the petals, sometimes alternating with small staminodes; filaments connate at base; anthers introrse, 2-celled, opening lengthwise; ovary superior, 3–5-celled, cells often again partially subdivided; ovules 2 in each cell, pendulous; styles 3–5, free or partly united, with simple capitate stigmas.
Fruits: septicidal capsule.
Seeds: compressed, shining, with or without endosperm; embryo straight, cotyledons flat.
Literature
McDill, Joshua Robert; The Phylogeny of Linum and Linaceae Subfamily Linoideae, with Implications for Their Systematics; Systematic Botany, June 2009; Doi 10.1600/036364409788606244; https://www.researchgate.net/publication/235443463; 2009.
McDill, Joshua Robert; Molecular phylogenetics of Linaceae with complete generic sampling and data from two plastid genes; Botanical Journal of the Linnean Society, 2011, 165, 64–83; Doi 10.1600/036364409788606244; https://www.researchgate.net/publication/235443463; 2011.