. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. 262 11. Rhodora i^^^ petiolate. Terrestrial plants of wet or dry places (11). 1 X 1 11. Pedicel with two conspicuous green bracteoles about half way up. Auricles of calyx de- flexed, round, small. Plants of the southern Coastal Plain (12). 12. Plant nearly unbranched, with thick oblan- ceolate or lanceolate acute leaves. Flower 19-20 mm. long, pubescent. Filament- , „ , . tube 6-8 mm. long • • • • lo- ^- ^«*«*- 12 Plant simple or branched, with thin oblong usually
. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. 262 11. Rhodora i^^^ petiolate. Terrestrial plants of wet or dry places (11). 1 X 1 11. Pedicel with two conspicuous green bracteoles about half way up. Auricles of calyx de- flexed, round, small. Plants of the southern Coastal Plain (12). 12. Plant nearly unbranched, with thick oblan- ceolate or lanceolate acute leaves. Flower 19-20 mm. long, pubescent. Filament- , „ , . tube 6-8 mm. long • • • • lo- ^- ^«*«*- 12 Plant simple or branched, with thin oblong usually obtuse leaves. Flower 15-16 mm. long, nearly smooth; corolla-tube some- times fenestrate; filament-tube 5-6 nun. long 16- ^' flacctdyoha- Pedicels with bracteoles at base. Auricles various (13). 13. Stem-leaves thin, sessile with a broad base, short-ovate, neariy smooth. Basal leaves small or none. Stem neariy smooth, even at base. Raceme more or less plainly secund (14). 14. Calyx-lobes smooth; auricles none; cen- tral Tennessee -14. L- GaUtngen. 14. Calyx-lobes strongly glandular-ciliate. Auricles glandular-cihate, very smaU or larger, foliose, 13. L. appendtculata. 13. Stem-leaves ovate or oblong to lanceolate, somewhat pubescent and narrowed at base. Stem densely short-pubescent be- low. Inflorescence a terminal unbranched spike, not plainly secund (15). 16. Basal leaves large, roundish, conspicuous; the cauline 1-5, very small, bract-hke. Raceme loose, nearly half the height of the plant. Auricles of calyx evident, but not .9e. L. ajricata, var. acapoaa, 15. Leaves mostly cauline; if basal, rarely roundish and usually with cauline leaves also present (16). 16. Plants strongly rough-pubescent, in- cluding stem, bracts, and the long calyx-lobes. Lower bracts leafy. Plants often short (20-50 cm.), with leaves low on the stem. Auricles small or none 9c. L. spicatat 16 Plants smooth or pubescent, leafy, often 50-100 cm. high (17).
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