Chiba University Matsudo/Kashiwa Campus Plant Database

Petunia toropiensis Stehmann & Larocca

ナス科 (Solanaceae)

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genus: Petunia [152] Show this Genus

Alt. genus:

pub_year: 2023

accepted: Accepted

Synonyms:

sort_name: PETUNIA TOROPIENSIS !

NCBI taxonomy ID: NCBI:txid

RHS_id:

JFcode:

trade_name:

awards:

breeder:

Plant Variety Protection:

note: Type: BRAZIL. Rio Grande do Sul: São Martinho da Serra, estrada para a antena, 29°27′08.44″S, 54°05′21.96″W, 197m, 9 November 2021 (fl.,fr.), J.R. Stehmann, J. Larocca & R. Vasconcelos 6557 (holotype BHCB206043!, isotypes ICN!, MBM!). (Figs. 1A-F, 2A-C, 3D)
Inf／Int形態論文で黒丸のクラスターの個体がこの種かもしれない。

sci_name: Petunia toropiensis

sci_name_html: <span class="sci_name"><i>Petunia toropiensis</i></span>

Japanese common name:

English common name:

Chinese common name:

Okinawa common name:

range_ja: ブラジル南部（リオグランデドスール州）

range_en: Brazil (Rio Grande do Sul)

Description (Japanese):

Description: Petunia toropiensis has a unique set of morphological traits: erect and ascendant habit, infundibuliform corolla with purple limb and yellow throat, yellow pollen, and erect fruiting peduncle. The new species shares the yellow pollen, the erect peduncles in fruiting and the small seeds (< 0.6 mm long) with P. axillaris, P. exserta and P. secreta, but differs from these species by its infundibuliform corolla (vs. hypocrateriform corolla).
Annual herbs up to 1.5 m high, erect or ascendant, viscose; trichomes 0.4–1.2 mm long, simple, multicellular, with glandular apex; stems up to 1 cm diam., cylindrical, hollow, erect, later very ramified, producing basal ascendant secondary branches, pilose; internodes 20–70 (–100) mm long. Leaves evenly distributed along the stem, the blade 58–120 x 24–50 mm, deltate-ovate, ovate to elliptic, acute at apex, long-attenuate at base, the base forming sometimes a winged petiole in the basal leaves, with up to 2 cm long, shortening towards the apex, pilose, brochidodromous, midrib sunken adaxially and slightly prominent abaxially, secondary veins 3 or 4 pairs, the first pair rising near to the base and slightly divergent. Inflorescence with numerous sympodial units, each one composed of 1 flower associated with 2 opposite leaflike bracts; bracts 15–30 mm long, 5–11 mm wide, ovate, sometimes deltoid, with base short-attenuate or sessile, cuneate, rounded or subcordate; internodes 15–50 mm long, generally shorter than vegetative ones, pilose. Flowers without perceptible fragrance; peduncle 11–18 mm long, pilose; calyx deeply lobed, tube 3–4 mm long, lobes 6.3–10 mm long, 2-2.5 mm wide, narrow-oblong to narrow-oblanceolate, apex obtuse; corolla infundibuliform, tube 15–20 mm long, base subcylindrical, then gradually expanded towards the apex, externally yellow, with marked veins, throat semilunar, 7–8 mm wide, yellow, purple net-veined, limb 30–45 mm diam., purple, lobes 13–17 mm long, 17–21 mm wide, obtuse; stamens 5, included, arranged in three distinct lengths; filaments with the free portion 4–5.2 mm, 4.5–5.7 mm, and 7.5–8 mm long, apex of the filaments curved, the adnate portion 4.5–6 (–7) mm long; anthers yellow, ca. 1.5 mm long; nectariferous disc reduced to two lobes; ovary 3–4 mm long, conic or ovoid, style 11–12 mm long, stigma bilobed, located located between the middle and longer stamens. Capsule 2-valved, 9–14 mm long, 4–7 mm wide, ovoid, calyx with enlarged, unequal lobes, lobes 10–17 mm long, 2–3 mm wide, longer than the length of the capsule; fruiting peduncle 14–29 mm long, erect; many seeds, 0.48–0.55 mm long, subglobose. Chromosome number unknown.
Etymology: The specific epithet is a reference to the place of occurrence of the species, only found in the Toropi river basin, in Rio Grande do Sul state.

Cultivation (Japanese):

Cultivation:

Sex:

genus_lt: Petunia

family: Solanaceae (ナス科)

Name ID: 11023

Update Information: Created: 2025-01-30 12:35 by hkokubun@mac.com; Updated: 2025-01-30 12:57 by hkokubun@mac.com