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Ajugeae

(Tribe)

Overview

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A Tribe in the Kingdom Plantae.

Photos

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Taxonomy

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The Tribe Ajugeae is a member of the Subfamily Ajugoideae. Here is the complete "parentage" of Ajugeae:

The Tribe Ajugeae is further organized into finer groupings including:

Genera

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Ajuga

Plants annual, biennial or perennial, herbaceous, rarely shrubs. Leaves simple; leaf blade papery, margin dentate to incised, rarely subentire. Verticillasters 2- to many flowered, in false spikes; floral leaves similar to stem leaves or gradually reduced to bracts, rarely dissimilar, larger than stem leaves. Flowers subsessile. Calyx ovoid to globose, campanulate to funnelform, 10-veined, sometimes with inconspicuous accessory veins; teeth 5, slightly irregular. Corolla purple to blue, rarely yellow or white, 2-lipped, often persistent in fruit; tube straight to slightly curved, base slightly bent/swollen; throat slightly dilated, villous annulate, rarely glabrous inside; upper lip straight, entire to 2-lobed; lower lip elongate, 3-lobed, with middle lobe obcordate to nearly flabellate and lateral lobes oblong. Stamens 4, didynamous, exserted from upper lip, involute in bud, anterior 2 longer; filaments straight to slightly curved; anther cells 2, apically confluent. Style subequally 2-cleft, lobes subulate. Nutlets obovoid, triquetrous, netted on back, lateral-ventral side with an areole 1/2-2/3 its length, with an elaiosome.[1] [more]

Alangium

Morphological characters and geographic distribution are the same as those of the family.[2] [more]

Alberta

A Genus in the Kingdom Plantae. [more]

Albuca

[more]

Alchemilla

Herbs perennial (rarely annual), with woody rhizome. Stems decumbent to erect. Leaves stipulate, long petiolate; stipules adnate to sheathing petiole; leaf blade simple, ± orbicular, margin lobed, digitate, or palmately parted. Inflorescences usually dense corymbs, rarely lax cymes or a solitary flower, ebracteate. Flowers very small, bisexual. Hypanthium urceolate, persistent, with constricted throat. Sepals 4(or 5), valvate; epicalyx segments 4(or 5), alternating with sepals. Petals absent. Disk lining hypanthium, margin thickened. Stamens (1-) 4; filaments free, short. Carpel 1(-4), sessile or substipitate, free; ovule ascending from base of locule; style basal or adaxial, filiform, glabrous; stigma capitellate. Achene 1(-4), enclosed in membranous hypanthium. Seed basal; testa membranous; cotyledons cylindric-obovoid. x = 8.[3] [more]

Allium

Herbs, perennial, scapose, from tunicate bulbs, with onion odor and taste. Bulbs solitary or clustered, dividing at base, or on rhizomes, reforming annually; outer coats generally brown or gray, smooth, fibrous, or with cellular reticulation (generally important in identification) ; inner coats membranous. Leaves generally withering from tip by anthesis, usually persistent, 1-12, basal; blade usually linear, terete, channeled, or flat (carinate in A. sativum, A. praecox, A. tuberosum, A. rotundum, A. neapolitanum, A. triquetrum, A. unifolium, and A. lacunosum), straight or ± falcate (coiled or circinate in A. nevadense and A. atrorubens), broader in A. victorialis and A. tricoccum, not petiolate (except in A. tricoccum and A. victorialis) . Scape usually persistent, terete or flattened. Inflorescences umbellate, flowering centripetally (centrifugally in A. schoenoprasum), sometimes replaced totally or partially by bulbils, subtended by spathe bracts; bracts conspicuous, ± fused, usually 3+-veined, equaling pedicel except in some introduced species, membranous. Flowers erect (pendent in A. triquetrum) ; tepals 6, in 2 similar whorls, ± distinct, petallike, usually becoming becoming dry and persisting; stamens 6, epipetalous; filaments in all but 1 native species broad at base, fused into ring (some introduced species and A. victorialis appendaged), linear, generally glabrous (A. rotundum and A. hoffmanii papillose to ciliate proximally) ; anthers and pollen variously colored; ovary superior, 3-lobed, sometimes crested with processes, 3-locular, usually 2 ovules per locule (6-8 in A. nigrum), crest processes 3 or 6, smooth except in A. haematochiton, A. sharsmithiae, and A. lacunosum; style 1; stigma capitate to ± 3-lobed; pedicel erect or spreading (lax in A. triquetrum) . Fruits capsular, dehiscence loculicidal. Seeds black, obovoid, finely cellular-reticulate, cells smooth or minutely roughened, with 1-8 papillae, without caruncle except in A. triquetrum. x = 7, 8, 9.[4] [more]

Amelanchier

Shrubs or trees, deciduous; buds conspicuous, narrowly conical, with several scales. Leaves simple, petiolate, stipulate, venation camptodromous, margin entire or serrate. Racemes terminal; bracts caducous. Hypanthium campanulate. Sepals 5, margin entire. Petals 5, white, oblong or lanceolate, slender. Stamens 10-20. Ovary inferior or semi-inferior, 2-5-loculed, with 2 ovules per locule, separated by a false partition from back of locule; styles 2-5, partly connate or free. Fruit a small berrylike pome, bluish black to dark purple, usually juicy and sweet, incompletely 4-10-loculed, with one seed in each locule, crowned by persistent, usually recurved sepals.[5] [more]

Anacyclus

Anacyclus is a genus of plants in the family. [more]

Ananas

[more]

Crataegus

Shrubs, subshrubs, or small trees, deciduous, rarely evergreen, armed, rarely unarmed; buds ovoid or subglobose. Leaves simple, stipulate, venation craspedodromous, margin serrate and lobed or partite, rarely entire. Inflorescences corymbose, sometimes flowers solitary. Hypanthium campanulate. Sepals 5. Petals 5, white, rarely pinkish. Stamens 5-25; carpels 1-5, connate, but free apically. Ovary inferior or semi-inferior, with 2 ovules per locule, but one rudimentary. Fruit a pome, with persistent sepals at apex; carpels bony when mature, each locule with 1 seed; seed erect, cotyledons plano-convex.[6] [more]

Hemerocallis

Herbs, perennial, scapose, clump-forming, rhizomatous, from fibrous or fleshy contractile roots often enlarged at ends; rhizomes spreading. Leaves many, basal, sessile, 2-ranked, bases sheathing; blade long-linear, keeled, apex acuminate. Inflorescences 2, in terminal helicoid cyme, or solitary. Flowers mostly diurnal and ephemeral, slightly irregular, showy; tepals 6, connate basally into short, funnelform to campanulate tube, distinct parts imbricate, spreading, inner broader than outer; stamens 6, adnate to throat of perianth tube; filaments curved upward, distinct, unequal; anthers dorsifixed, 2-locular, linear-oblong, dehiscence introrse; ovary superior, green, 3-locular, conic, septal nectaries present; style curved upwards; stigma indistinctly 3-lobed or capitate. Fruits capsular, leathery, dehiscence loculicidal. Seeds rarely produced (sterile) or many. x = 11.[7] [more]

Linum

Erect herbs, rarely shrubby below. Leaves alternate, linear to lanceolate, sessile. Flowers ebracteate, 5-merous, in cymes or racemes. Sepals entire. Petals linear to lanceolate or obovate. Glands 5, adnate to the staminal tube, opposite the petals. Stamens 5, connate at the base; staminodes present or absent. Carpels 5; ovary 10-locular due to secondary septa; styles 5, free or connate at the base; stigma linear to capitate. Fruit a septicidal capsule.[8] [more]

At least 833 species and subspecies belong to the Genus Linum.

More info about the Genus Linum may be found here.

Bibliography

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Footnotes

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  1. "Ajuga". in Flora of China Vol. 17 Page 63. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  2. ba jiao feng shu "Alangium". in Flora of China Vol. 13 Page 304. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  3. Li Chao-luang, Hiroshi Ikeda, Hideaki Ohba "Alchemilla". in Flora of China Vol. 9 Page 388. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  4. Dale W. McNeal Jr. & T. D. Jacobsen "Allium". in Flora of North America Vol. 26 Page 53, 55, 224, 225, 259, 334, 336. Oxford University Press. Online at EFloras.org.
  5. Ku Tsue-chih, Stephen A. Spongberg "Amelanchier". in Flora of China Vol. 9 Page 190. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  6. Ku Tsue-chih, Stephen A. Spongberg "Crataegus". in Flora of China Vol. 9 Page 111. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
  7. Gerald B. Straley & Frederick H. Utech "Hemerocallis". in Flora of North America Vol. 26 Page 51, 53, 57, 219. Oxford University Press. Online at EFloras.org.
  8. "Linum". in Flora of Pakistan . Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.

Sources

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Last Revised: November 20, 2008