a. Nephrolepis acutifolia (Desv.) H.Christ, rhachis scales tomentose; b. N. davallioides (Sw.) Kunze, rhachis scales with dark apex, directed sideways; c. N. radicans (Burm.) Kuhn, rhachis scales without protracted acumen, appressed; d. N. cordifolia (L.) C.Presl var. cordifolia, rhachis scales with elongated acumen; e. N. lauterbachii H.Christ, rhachis scales with elongated, dark acumen; f. N. hirsutula (G.Forst.) C.Presl, rhachis scales dense, strongly dentate; g. N. falciformis J.Sm., rhachis scales without protracted acumen, dark; h. N. falcata (Cav.) C.Chr., rhachis scales very dark, directed sideways; i. N. obliterata (R.Br.) J.Sm., rhachis scales appressed, very inconspicuous (a:Anderson 3632., inset:Nur 204.; b:Hortus Leiden., inset:Stone 6075.; c:Hortus Leiden., inset:Alston 13116.; d:Hortus Leiden 960313., inset:Van Beusekom & Phengkhlai 3094.; e:Hortus Leiden 930105., inset:Vink & Schram BW 8623.; f:Pullen 7584., inset:Idjan & Mochtar 917.; g:Hortus Leiden 960312., inset:De Joncheere 1329.; h:Hortus Leiden 902014.; inset:Elmer 10330.; iTakeuchi 8915., inset:Van Royen 3170.). — Scale bars: a-c, e, g = 1 mm; d, f, h = 2 mm; i = 0.5 mm.