Single Record

PhotoRecords: YES Katherine Zybko Saguache Indian Spring, Great Sand Dunes NPP, 25 June 2023

Comments: Triglochin palustris has few Watershed records, but those few represent a range of elevation, from basin to upper montane. For instance it has been recorded from Vermejo Range in the Culebras at 11,600' elev (Costilla Co, 2014) and the Great Sand Dunes at 7,680' (Saguache Co, 2023). Ackerfield confirms this kind of range for plants found in Colorado, where she notes it is "uncommon." Regardless of elevation, the species prefers a marshy and sometimes alkaline habitat. T. palustris has a scattered presence across the northern third of the USA and all states W of the Great Plains. It has been recorded from Otero Co, New Mexico, the most southerly location in the Rio Grande drainage. Note that spacing of flowers is not a very reliable trait to distinguish T. palustris from T. maritima, since the first often has flowers tightly packed toward the distal end of the spike and widely spaced toward the proximal. However, in T. palustris the fruiting receptacles are winged, in T. maritima not winged. If the plant is not in fruit, size can help. If it is over 7 dm in height, it is probably T. maritima. If under 3 cm, probably T. palustris.