Chirtoiu M (1918) Observations sur les Lacistema et la situation systematique de ce genre in Bulletin de la Societe Botanique de Geneve, H. Georg & Co., Bale & Lyon, 2me serie, Volume X(7): 343-4
Although the protologue states the epithet as "leptosachyum" this is a typograpical error, see Article 60 of the ICBN. The correct spelling should be "leptostachyum".
Protologue
Frutex ramis virgatis glabris, lucidis; Folia glabra subcoriacea oblonga, 120/32, 85/25, 100/25, 95/29, 80/12 mm. vel minora, fere usque ad basin remote serrula, dentibus minutis 4 mm. distantibus, petiolo 4 mm. lg.; Amenti 18-22 mm. longi, 1,5 mm crassi, inde graciles et radiantes; Sepala 4 lanceolata disco duplo longiora quam bracteolae filiformes vix longiora; discus cupuliformis basin ovarii amplectans; Ovario glabro ellipsoideo sensim in stylum desinente, stigmatibus tribus inaequalibus postico 1/3 breviore, acutissimis suberectis; Stamen multo superantibus; filamentum staminis breve connectivo longiore brachiato angulo late aperto ramis patentibus vel horizontalibus, antheris longioribus;
Affinis Lacistema serrulata Mart. a quo differt foliis multo longioribus, amentis 7-10 mm. longis, fere 2 mm. crassis, stigmatibus erectis haud patulis
