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Solanum miyakojimense Yamazaki et Takushi. 1: Habit. 2: Leaf, adaxial surface. 3: Portion of a leaf, abaxial surface. 4: Flower. 5: Corolla lobes, adaxial (left) and abaxial (right) surface. 6: Stamen. 7: Flower, corolla and stamens removed. 8: Portion of a branch. 9: Fruit with a branch. 10: Seed.
Source publication
Solanum is a large and morphologically diverse genus comprising almost 75% of the species in the family Solanaceae. Twenty species were recorded in Taiwan. Solanum miyakojimense Yamazaki & Takushi was published in 1991 as an endemic species in Miyako Islands, Ryukyu. A careful examination of herbarium collections supplemented by field studies confi...
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Citations
... Ecology and habitat. Solanum miyakojimense occurs in rocky coastal areas, often on coral bluffs (Hsu et al. 2007) near sea level; often occurring in sea spray. ...
... It differs from S. procumbens, which occurs from China east to Thailand and the islands of Timor and Flores (Indonesia), in its seaside habitat; it can also be distinguished in its straight or only slightly curved stem prickles (versus strongly hooked), tiny inflorescences with only a few flowers with no or a very tiny peduncle (versus a longer thin peduncle), smaller flowers with broadly triangular corolla lobes (versus flowers with long-triangular corolla lobes), shorter pedicels in fruit and seeds with sinuate (versus pentagonal) cell walls. Berries of S. procumbens are bright red and globose at maturity, while those of S. miyakojimense are orange or orange-red and usually somewhat ellipsoid (Hsu et al. 2007). ...
The Leptostemonum Clade, or the “spiny solanums”, is the most species-rich monophyletic clade of the large cosmopolitan genus Solanum (Solanaceae) and represents almost half the species diversity of the genus. Species diversity in the clade is highest in the Americas, but significant clusters of endemic taxa occur in the Eastern Hemisphere. We present here a taxonomic revision of the 51 species of spiny solanums occurring in tropical Asia (excluding the island of New Guinea, and the lowlands of Nepal and Bhutan). Three species are described as new: Solanum kachinense X.Aubriot & S.Knapp, sp. nov. from northern Myanmar, S. peikuoense S.S.Ying, sp. nov. from Taiwan, and S. sulawesi X.Aubriot & S.Knapp, sp. nov. from northern Sulawesi, Indonesia. Of the spiny solanums occurring in the region, 38 are native and 13 are introduced from the Americas or Africa, either as adventive weeds or as cultivated plants. Phylogenetic resolution amongst these taxa is still a work in progress, so we have chosen to treat these taxa in a geographical context to aid with identification and further taxon discovery. For the native species we provide complete nomenclatural details for all recognised species and their synonyms, complete descriptions, distributions including maps, common names and uses, and preliminary conservation assessments. For the introduced taxa that have been treated in detail elsewhere we provide details of types, synonyms based on tropical Asian material, general distributions, and common names for the region. We provide lecto- or neotypifications for 67 names; 63 for native and 4 for introduced taxa. All taxa are discussed and compared to similar species; keys are provided for all taxa. We illustrate all native species with herbarium and field photographs and introduced species with field photographs only. All specimens examined for this treatment are included in Suppl. materials 1–3 as searchable files
