Treatment remains uncertain. A. stellatum is a widespread North American species centered in the upper midwest, with outlying southeastern populations reported from c. Tenn., s. Ill., and perhaps s. Ind. There are dubious or unverified reports from Ky., where it has often been confused with cernuum (M). However, D. Estes (pers. comm.) has reported it from CRIT, based on L. McKinney #4570, in full flower on 1990/9/4 (BEREA); see also R.Athey colls. from CRIT. More recently, M. Brock has collected similar plants in LOGA, flowering in late Aug to late Sep (APSC). Compared to typical cernuum typical stellatum differs as follows: (F, W; Choi & Cota-Sanchez.2010; D. Estes, pers. comm.): flowering usually in late Jul-late Sep (versus late Jun-early Aug), tepals spreading to stellate (versus campanulate to spreading), deep pink with reddish midveins (versus white-pink); inner tepals 7.1-7.7 mm long, elliptical to lanceolate (versus 5-6.7 mm, ovate); outer tepals 6-6.2 mm long, elliptical with acute apex (versus 3.8-4.8 mm, oval-orbicular with subrotund apex); inner filaments non-exserted (versus exserted); scapes somewhat chanelled in cross-section (versus almost flat), usually 30-60 cm long (versus 15-45 cm), nodding in bud but becoming erect in late flower to fruit (versus still nodding in fruit); bulbs ovoid (versus more elongate). However, it appears likely that most or all plants that have been called stellatum in Ky., Tenn., Ala. and Ga. represent a distinct taxon similar to cernuum but with some characters suggesting stelllatum (W). This taxon differs from cernuum most clearly in its later flowering and taller scapes; tepals may be larger on average and more spreading; leaves may be more glaucous. Its scapes remain nodding in fruit and its bulbs are elongated, unlike stellatum.