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Solanum diphyllum

(Amatillo)

Interesting Facts

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Common Names

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Common Names in English:

Amatillo, Twinleaf Nightshade, Twoleaf Nightshade

Description

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Family Solanaceae

Herbs, shrubs , small trees , or climbers . Stems sometimes prickly, rarely thorny; hairs simple , branched, or stellate , sometimes glandular . Leaves alternate, solitary or paired , simple or pinnately compound , without stipules; leaf blade entire, dentate , lobed , or divided . Inflorescences terminal , overtopped by continuing axes, appearing axillary , extra-axillary , or leaf opposed, often apparently umbellate , racemose, paniculate , clustered, or solitary flowers, rarely true cymes, sometimes bracteate . Flowers mostly bisexual , usually regular, 5-merous, rarely 4- or 6-9-merous. Calyx mostly lobed. Petals united . Stamens as many as corolla lobes and alternate with them, inserted within corolla, all alike or 1 or more reduced; anthers dehiscing longitudinally or by apical pores . Ovary 2-5-locular; placentation mostly axile ; ovules usually numerous . Style 1. Fruiting calyx often becoming enlarged, mostly persistent . Fruit a berry or capsule. Seeds with copious endosperm; embryo mostly curved .

About 95 genera with 2300 species: best represented in western tropical America, widespread in temperate and tropical regions ; 20 genera (ten introduced ) and 101 species in China.

Some species of Solanaceae are known in China only by plants cultivated in ornamental or specialty gardens: Atropa belladonna Linnaeus, Cyphomandra betacea (Cavanilles) Sendtner, Brugmansia suaveolens (Willdenow) Berchtold & Presl, Nicotiana alata Link & Otto, and Solanum jasminoides Paxton.[1]

Genus Solanum

Herbs, shrubs , climbers , or small trees , sometimes prickly; hairs simple , branched, or stellate , sometimes glandular . Leaves solitary or paired , simple or pinnately compound , mostly petiolate ; leaf blade entire, dentate , lobed , or parted . Inflorescences axillary , extra-axillary , or leaf opposed, mostly racemose, paniclulate, umbellate , fasciculate, or solitary flowers, without bracts; peduncle branched or not, sometimes obsolete . Flowers bisexual or andromonoecious, mostly actinomorphic , often 5-merous. Calyx mostly lobed partway and splitting further at sinuses. Corolla mostly rotate or stellate. Stamens inserted high in corolla tube ; anthers often connivent or connate around style, dehiscing by apical pores , often later splitting longitudinally. Ovary 2-5-locular, with enlarged placentae; ovules axile , numerous . Stigma small. Fruiting calyx persistent, sometimes enlarged and enclosing berry. Berries mostly juicy. Seeds discoid or lenticular ; embryo strongly curved .

About 1200 species: most in tropical and subtropical regions, especially in the Americas; 41 species in China, about half introduced from elsewhere.[2]

Physical Description

Species Solanum diphyllum

Shrubs glabrous . Stems erect , 0.5-2 m tall, young stems angled proximal to nodes from decurrent leaf bases , otherwise terete . Leaves unequal paired ; petiole of major leaf 1-1.5 cm, winged by leaf bases; blade of major leaf elliptic to oblong , sometimes broad, 4-9 × 2-3.5 cm, base attenuate and decurrent on petiole and stem, margin entire, apex rounded ; minor leaves subsessile , blade rounded, 1.5-3 × 1.2-2.2 cm, entire. Inflorescences leaf opposed, short scorpioid racemes , often subumbellate; peduncle unbranched, 3-12 mm, later bearing conspicuous pedicel scars . Pedicel 5-12 mm, erect at anthesis . Calyx constricted at base and just proximal to lobes , 2-2.5 mm; lobes deltate, ca. 1 mm, minutely ciliolate . Corolla white, 3.5-4.5 mm, lobed ca. 3/4 way to base. Filaments short; anthers 1-1.5 mm. Ovary glabrous. Style 3-4 mm. Fruiting pedicel erect, 0.8-1.4 cm. Berry orange, globose , slightly 2-lobed, 7-12 mm in diam. Seeds yellow or tan, reniform-discoid, ca. 3 × 2 mm, margins thickened. Fl. May-Jul, fr. Jun-Sep. [source]

Habit: Subshrub , Shrub

Flowers: Bloom Period: April, May, June, July, August. • Flower Color: near white, pale pink, white

Size/Age/Growth

Size: 4-6' tall.

Habitat

Typically found in the intertidal zone at the water's edge at a mean distance from sea level of 193 meters (634 feet).[3]

Biome: Coastal.

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 15-18" apart.

Soil: Minimum pH: 6.1 • Maximum pH: 8.5

Sunlight: Sun Exposure: Sun to Partial Shade.

Temperature: Cold Hardiness: 9a, 9b, 10a, 10b, 11. (map)

Taxonomy

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Notes

Name Status: Accepted Name .

Last scrutiny: Jul-2004

Similar Species

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Members of the genus Solanum

ZipcodeZoo has pages for 1665 species, subspecies, varieties, forms, and cultivars in this genus. Here are just 100 of them:

S. acaule (Wild Andean Potato) · S. aculeastrum (Sodaapple Nightshade) · S. adscendens (Sonoita Nightshade) · S. aethiopicum (Ethiopian Nightshade) · S. aethiopicum 'Burkina Faso' (Eggplant) · S. aethiopicum 'Gilo Black Stem' (Japanese Golden Eggs) · S. aethiopicum 'Jaxatu Soxna' (African Eggplant) · S. aethiopicum 'Jilo Tingua Verde Claro' (Indian Eggplant) · S. aethiopicum 'Keur M'bir N'dao' (African Eggplant) · S. aethiopicum 'N'drowa' (African Eggplant) · S. aethiopicum 'N'galam' (African Eggplant) · S. aethiopicum 'N'goyo' (African Eggplant) · S. aethiopicum 'Ruffled Red' (Japanese Golden Eggs) · S. aethiopicum 'Turkish Orange' (Japanese Golden Eggs) · S. americanum (Apple of Sodom) · S. anguivi (African Nightshade) · S. annuum 'Maor' (Bell Pepper) · S. atropurpureum (Potato Vine) · S. aviculare (Kangaroo Apple) · S. bahamense (Bahama Nightshade) · S. bahamense var. bahamense (Bahama Nightshade) · S. bahamense var. luxurians (Bahama Nightshade) · S. bahamense var. rugelii (Rugel's Nightshade) · S. betaceum (Tamarillo) · S. bulbocastanum (Ornamental Nightshade) · S. bulbocastanum bulbocastanum (Ornamental Nightshade) · S. burbankii (Wonderberry) · S. cajanumense (Tomate Silvestre) · S. campechiense (Redberry Nightshade) · S. candidum (Fuzzyfruit Nightshade) · S. capsicastrum (False Jerusalem Cherry) · S. capsicastrum 'Variegatum' (Variegated False Jerusalem Cherry) · S. capsicoides (Cockroach Berry) · S. cardiophyllum (Heaftleaf Horsenettle) · S. caripense (Mamoncillo) · S. carolinense (Apple of Sodom) · S. carolinense var. carolinense (Carolina Horse-Nettle) · S. carolinense var. floridanum (Carolina Horsenettle) · S. carolinense var. hirsutum (Carolina Horsenettle) · S. chacoense (Wild Andean Potato) · S. chenopodioides (Goosefoot Nightshade) · S. circinatum ramosa (Tomate De ) · S. citrullifolium (Melon-Leaf Nightshade) · S. citrullifolium var. citrullifolium (Watermelon Nightshade) · S. citrullifolium var. setigerum (Watermelon Nightshade) · S. clokeyi (Clokey's Nightshade) · S. commersonii (Commerson's Nightshade) · S. commersonii commersonii (Commerson's Wild Potato) · S. conocarpum (Marron Bacoba) · S. coronopus (Green False-Nightshade) · S. crispum 'Glasnerium' (Blue Potato Vine) · S. crispum 'Glasnevin' (Chilean Potato Tree) · S. crispum 'Variegata' (Chilean Potato Tree) · S. davisense (Davis Horsenettle) · S. demissum (Nightshade) · S. dimidiatum (Torrey Nightshade) · S. diphyllum (Amatillo) · S. donianum (Mullein Nightshade) · S. douglasii (Douglass Nightshade) · S. drymophilum (Erubia) · S. dulcamara (Bitter Nightshade) · S. dulcamara var. dulcamara (Bittersweet Nightshade) · S. dulcamara var. villosissimum (Bittersweet Nightshade) · S. dulcamara 'Variegatum' (Nightshade) · S. elaeagnifolium (Bull Nettle) · S. ellipticum (Velvet Potato Bush) · S. endopogon guianensis (Uluwukusi) · S. erianthum (Mullein Nightshade) · S. fendleri (Fendler Horsenettle) · S. fendleri var. fendleri (Fendler's Horse-Nettle) · S. fendleri var. texense (Texan Horsenettle) · S. ferox (Nightshade) · S. furcatum (Forked Nightshade) · S. gayanum (Chilean Nightshade) · S. giganteum (African Holly) · S. gilo (Gilo) · S. glaucophyllum (Waxyleaf Nightshade) · S. gracilius (Slender Nightshade) · S. granulo-leprosum (Solanum) · S. heterodoxum (Melon-Leaf Nightshade) · S. heterodoxum var. heterodoxum (Melonleaf Nightshade) · S. heterodoxum var. novomexicanum (New Mexican Nightshade) · S. heterodoxum var. setigeroides (Melonleaf Nightshade) · S. hindsianum (Hinds' Nightshade) · S. hirsutum (Carolina Horsenettle) · S. hyporhodium (Cocona) · S. incanum (Nightshade) · S. incompletum (Popolo Ku Mai) · S. indicum (Sparrow´s Brinjal (India)) · S. interius (Deadly Nightshade) · S. jamaicense (Jamaica Nightshade) · S. jamesii (Wild Potato) · S. jasminoides (Jasmine Nightshade) · S. jasminoides 'Album' (Potato Vine) · S. jasminoides 'Variegata' (Variegated Potato Vine) · S. khasianum (Nightshade) · S. lanceifolium (Lanceleaf Nightshade) · S. lanceolatum (Kangaroo Apple) · S. lasiocarpum (Nightshade) · S. lasiophyllum (Flannel Bush)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 22, 2007:

Identifiers

Footnotes

  1. Zhi-Yun Zhang, Anmin Lu & William G. D'Arcy "Solanaceae". in Flora of China Vol. 17 Page 300. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Solanum". in Flora of China Vol. 17 Page 314. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Standard Deviation = 1,003.920 based on 50 observations. Terrestrial altitude and ocean depth information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012