Erectum glabrum, saepe 15-25 cm. altum, annuum vel bienne (fide M. Wilmian), papillis inconspicuis; rami subvirgati, apicem versus laxe cymiferi, basi 4 mm. diam., intemodiis 1-5.5 cm. longis; folia supra eoncava vel fere plana, dorso rotundata, lat. visa superne angustata, acuta vel obtusa, soixlide viridia, saepe 3-3.5 cm. longa, vagina 1 mm., medio 3-4 mm. lata diametroque; flores laxe 1-3-ternati; pedunculi ultimi 1-2 cm. longi; receptaculum cum apice pedunculi leviter ampliato anguste clavatum, parum infra basin sepalorum leviter eonstrictum, 2.5-3 mm. longum, ad 4-5 mm. diam.; sepala 5, 5-10 mm., vel accrescentia ad 12 mm., longa, foliacea, superne leviter angustata, acuta vel subobtusa, basi 1.5-2 mm. lata, 3 marginata; petala 2-seriata, prope apicem leviter ampliata, obtusa, in feme baud angustata, nivea, 6-7 mm. longa, saepius ad 1-1.25 mm. lata, pauca acuta intima addita; staminodia acuminata apicem versus recurva, extima stamina conferta bene superantia; filamenta alba, ad 3.5 mm. longa, exteriora basi parce, intima medio sat parce, papillata, polline aureo; glandulae distantes; ovarium circa marginem planum, medium versus lobatum, lobis erectis approximatis obtusis, per 0.75 mm. elevatis; stigmata 5, subulata, 2 mm. longa.
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