taxonID	type	description	language	source
9476BB520B76FFD5AB912415FEF3FED9.taxon	materials_examined	Type: — JAPAN. The Ryukyus, the Okinawa Islands, Okinawa Island, Onna, 2 October 1949, Tawada 2221 (holotype US!; available from: http: // collections. mnh. si. edu / search / botany /? ti = 3).	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B76FFD5AB912415FEF3FED9.taxon	description	Description: — Herbs perennial, 3 – 5 cm tall. Stems not articulated, diffuse, branched basally, ca. 1 mm thick; basal stems woody, prostrate, upper stems herbaceous, upright, reddish green. Root fleshy, much-branched. Leaves spirally arranged to alternate, subsessile, without axillary hairs; leaf blade 2 – 3 mm thick, oblong to obovate, 5 – 8 mm long, base obtuse, apex obtuse or rounded. Flowers solitary, about 10 – 15 mm in diameter. Sepals 2, ovate-deltate, about 2 mm long. Petals 5, obovate to nallowly obovate, orangey yellow, mostly without margins overlapping. Stamens 12 – 15. Ovary ovoid. Stigma usually trilobed or tetralobed; capsule glossy, 2 – 4 mm long, 2 – 3 mm wide.	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B76FFD5AB912415FEF3FED9.taxon	distribution	Distribution and habitat: — The Ryukyus, the Okinawa Islands, Okinawa, Aka, Geruma, Tonaki islands. Coastal rocky slopes, xeric, saline, and exposed to direct sunlight. Portulaca okinawensis has also been recorded from Aka, Geruma, Yakabi, Tonaki, Aguni, and Kume islands of the Okinawa Islands (Shinjo & Shinzato 2006). We have not collected samples from these islands. We examined a herbarium specimen of P. okinawensis collected from Yakabi Island (Miyagi 8414, RYU, collected in 1978) but we could not identify it at variety level because of the difficulty in counting of the number of stamens and the discoloring of the petals and stems. Additional specimens examined: — JAPAN. The Ryukyus, the Okinawa Islands: Okinawa Island, Onna (OK 1), 10 August 2010, Kokubugata 12873 – 12878 (TNS); Okinawa Island, Onna (OK 2), 20 September 2007, Kokubugata 9988, 9989, 10018 (TNS); Okinawa Island, Onna (OK 3), 1 September 2010, Kokubugata 12886 – 12891 (TNS); Okinawa Island, Yomitan (OK 4), 29 August 2010, Kokubugata 12867 – 12872, 12879 – 12885 (TNS); Aka Island, 30 August 2012, Kokubugata 15161 – 15165 (TNS); Geruma Island, 30 August, 2012, Kokubugata 15166 – 15170 (TNS); Tonaki Island, 31 August 2012, Kokubugata 15179 – 15183 (TNS).	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B75FFD5AB912048FA80FAB3.taxon	materials_examined	Type: — JAPAN. The Ryukyus, the Amami Islands, Amami Island, Yamato, 6 September 2012, Kokubugata 15198 (holotype TNS!).	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B75FFD5AB912048FA80FAB3.taxon	diagnosis	Diagnosis: — Differt a var. okinawensi staminibus 12 – 15, petalis citrinis, obovatis vel oblanceolatis, caulibus viridibus.	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B75FFD5AB912048FA80FAB3.taxon	description	Description: — Herbs perennial, 3 – 5 cm tall. Stems not articulated, diffuse, branched basally, ca. 1 mm thick; basal stems woody, prostrate, upper stems herbaceous, upright, bright green. Root fleshy, much-branched. Leaves spirally arranged to alternate, subsessile, without axillary hairs; leaf blade 2 – 3 mm thick, oblong to obovate, 5 – 8 mm long, base obtuse, apex obtuse or rounded. Flowers solitary, about 10 – 15 mm in diameter. Sepals 2, ovate-deltate, about 2 mm long. Petals 5, obovate, emarginate, rotund to obtuse, lemon-colored, with margins overlapping. Stames 12 – 15. Ovary ovoid. Stigma usually trilobed or tetralobed; capsule glossy, 2 – 4 mm long, 2 – 3 mm wide.	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B75FFD5AB912048FA80FAB3.taxon	etymology	Etymology: — The epithet refers to the Amami Islands, the locus classicus.	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
9476BB520B75FFD5AB912048FA80FAB3.taxon	distribution	Distribution and habitat: — Endemic to the Amami Islands (the Ryukyus), in Amami and Tokuno-shima islands. Coastal rocky slopes, xeric, saline, and exposed to direct sunlight. In Kakeroma Island, being an islet situated in the Amami Island, P. okinawensis has been recorded. However, we could not obtain and investigate samples from the island. IUCN Red list category: — It can be included in the Data Deficient (DD) category of IUCN Red List categories (IUCN 2010) as there are inadequate information to make a direct or indirect assessment of its risk of extinction based on its distribution and / or population status. Additional specimens examined (paratypes): — JAPAN. The Ryukyus, the Amami Islands: Amami Island, Amami (AM 1), 3 November 2010, Kokubugata 12939 – 12942, 7 September 2012, Kokubugata 15434 – 15443 (TNS); Amami (AM 2), 18 October 2008, Kokubugata 11096 – 11100 (TNS); Yamato (AM 3), 6 September 2012, Kokubugata 15197 – 15202; Uken (AM 4), 18 October 2008, Kokubugata 11081 – 11085, 11102 (TNS); Tokuno-shima Island, Amagi (TK), 17 October 2007, Kokubugata 12140 – 12144 (TNS).	en	Kokubugata, Goro, Nakamura, Koh, Hirayama, Yumiko, Yokota, Masatsugu (2013): Taxonomic reexamination of Portulaca okinawensis (Portulacaceae) in the Ryukyu Archipelago of Japan based on molecular and morphological data. Phytotaxa 117 (1): 11-22, DOI: 10.11646/phytotaxa.117.1.2, URL: http://dx.doi.org/10.11646/phytotaxa.117.1.2
