Physotegia serotina (Labiatae), a New Species from Coastal Louisiana and Texas

Authors

Lloyd H. Shinners, Southern Methodist University

Publication Date

1-1-1956

Abstract

PHYSOSTEGIA serotina Shinners, sp. nov. Perennis arrhizomatosa caule glabro 35-125 cm. alto, foliis inferioribus breviter petiolatis (petiolis 0.3-1.5 cm. longis) laminis lanceolatis 3-7 cm. longis 0.5-1.3 cm. latis acutis acute serratis, superioribus gradatim multo minoribus lineari-lanceolatis sessilibus. Inflorescentia simplex vel virgato-ramosa, cum bracteis calycibusque densissime minute pubescens eglandulosa vel parce capitato-glandulosa. Calyces 7-9 (denique 10) mm. longi, dentibus anguste deltoideo-lanceolatis 2.0-3.3 cm. longis inclusis. Corollae spectabiles roseo-violaceae maculatae 2.5-3.2 cm. longae (tubo 0.7-1.4 cm. longo e calyce denique valde exserto). Nuculi glabri, maturi desunt. LOUISIANA, CALCASIEU PARISH: clay ditch bank, east side of Lake Charles, Shinners 22108, 9 October 1955 (TYPE). Additional specimens, both of injured plants with abnormal branching, seen from TEXAS, HARRIS Co. : 6½ miles southwest of Genoa, V. L. Cory 50716, November 11, 1945. JEFFERSON Co.: 9 miles west of Beaumont, Cory 50021, November 11, 1945. (Cited specimens all in Herb. Southern Methodist University.)

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Recommended Citation

Shinners, Lloyd H. (1956) "Physotegia serotina (Labiatae), a New Species from Coastal Louisiana and Texas," Field and Laboratory: Vol. 24 : No. 1.
Available at: https://scholar.smu.edu/fieldandlab/vol24/iss1/4