Overview

Distribution

National Distribution

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Diagnostic Description

Formal Description

Habit

Herbaceous tuber-bearing perennials 0.2-0.5 m tall. Stems 2-5 mm in diameter at base of plant.

Sympodial Structure

Sympodial units typically 3-6-foliate.

Leaves

Pseudostipules to 10 mm long, pinnatifid. Leaves odd-pinnate, 7-15 cm long, 4-9 cm wide, glabrescent and glandular adaxially and abaxially; petioles 1.5-3.5 cm long; lateral leaflet pairs 3-4, the second most distal lateral leaflets larger than the most distal, then the size of the lateral leaflets diminishing gradually towards the base of the leaf; most distal lateral leaflets 3-5 cm long, 0.7-2 cm wide, lanceolate to elliptic-lanceolate, apex acute, base oblique, sessile, strongly decurrent on the rachis; terminal leaflet 4-6.5 cm long, 1-2.5 cm wide, lanceolate, apex acute to acuminate, base attenuate; interjected leaflets absent.

Inflorescences

Inflorescence a dichasially branched, ebracteate, monochasial or dichasial cyme, 2-3 forked, generally in the distal half of the plant, with 4-10 flowers, all flowers perfect, peduncle 1-6 cm long; pedicels 16 -30 mm long, articulate between the proximal ¼ and the distal ¼.

Flowers

Flowers with the calyx up to 6 mm long, lobes oblong, apiculate to caudate, acumens 1-2.5 mm long. Corollas 2.8-3.5 cm in diameter, stellate, without acumens, edges of corolla flat, not folded dorsally, white. Anthers 6 mm long, connate, yellow, apically poricidally dehiscent and often maturing to a short introrse apical slit, filaments 1-4 mm long. Ovary with style 12-14 mm long, exceeding stamens by 5-6 mm, straight, with stigma globose.

Fruits

Fruits 1 cm in diameter, globose, green throughout.

Seeds

Seeds from living specimens green-white throughout, ovoid, ca. 2 mm long, with a thick covering of “hair-like” lateral walls of the testal cells that make the seeds mucilaginous when wet. Removal of these hair-like lateral walls by enzyme digestion reveals a honeycomb pattern at their base.

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Type Information

Isotype for Solanum jamesii var. heterotrichium Bitter
Catalog Number: US 489307
Collection: Smithsonian Institution, National Museum of Natural History, Department of Botany
Preparation: Pressed specimen
Collector(s): Collector unknown
Year Collected: 1898
Locality: Fort Collins, College Farm., Colorado, United States, North America
  • Isotype: Bitter, F. A. G. 1912. Repert. Spec. Nov. Regni Veg. 11: 444.
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Life History and Behavior

Cyclicity

Phenology

Flowering and fruiting June through October.

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Solanum jamesii

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Solanum jamesii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Molecular Data

Chloroplast DNA restriction site data available in: Spooner and Sytsma (1992). AFLP, morphological, and microsatellite data listed in: Lara-Cabrera (2001).

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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