Japan Flora: Bulbs globose, 6-8 mm. in diameter, the scales 2, thickened, semiglobose; stems 15-20 cm. long; leaves cauline, consisting of a pair of opposite leaves near the middle and 3 verticillate leaves (bracts) above, the lower pair lanceolate or linear- lanceolate, 4-6 cm. long, 4-10 mm. wide, subacute, sessile, the upper 3 usually smaller, commonly linear, the pedicels about 1 cm. long; flowers tubular-campanulate, the tepals oblanceo­late to linear-oblong, not reticulate, 1.5-2 cm. long, glandular near the base; filaments and style rather densely papillose. Mar.-Apr.

Honshu (Chiigoku Distr.), Shikoku, Kyushu; rare.

Japan Red List (2000)

This is a perennial grass. It grows up to 10-20 cm in height, and its leaves are lanceolate to broadly ovate. It resembles a cobai plant, but its flowers are bell-shaped tubes with 14-15 mm perianth segments, which are not netted but have veins. There are no protrusions on the edges of the perianth segments. 

Of the 26 areas, the current status of 8 areas is unknown. There are several individuals in 4 areas, tens of individuals in 11 areas, and several individuals in 3 areas, with an estimated total of about 1,000 individuals. The average reduction rate is about 30%, and the probability of extinction in 100 years is about 10%. The main reasons for the decrease are the collection for horticulture, vegetation transition, and deforestation.