Notes and News: The Gray Birch, <em>Betula Populifolia</em> Marshall, In Maryland; <em>Elaeagnus Pungens</em> (Elaeagnaceae) in Louisiana; <em>Streptopus Amplexifolius</em> (L.) DC, New to Tennessee; Three Maryland Stations for the Northern White Cedar
ABSTRACT Recent botanizing in the Elliott Knob area of Great North Mountain of Augusta County, Virginia, has added a second population of <em>Trillium pusillum</em> Michx. var. <em>monticulum</em> Bodkin & Reveal. This discovery adds another location for this rare montane trillium in western Virginia and extends the range southward into another county.
ABSTRACT <em>Senecio pauperculus</em> Michx. is reported as new in Mississippi and additional records are reported from other southeastern United States.
ABSTRACT <em>Harperocallis flava</em> McDaniel (Harper’s beauty), a federally endangered species, occurs along a 32-kilometer stretch of SR 65 in Franklin and Liberty Counties, Florida. Previous estimates of populations at the three known stations were less than 100 plants. In May 1982 additional colonies were found along SR 65 and along the Apalachicola Northern Railroad in Liberty County. A revised estimate of 6,000 Harper’s beauty plants is reported. Habitat studies and management plans are needed. In view of the apparent threat by collectors, the restricted range of the species, and the lack of knowledge pertaining to species biology, continued endangered status for Harper’s beauty is recommended.
ABSTRACT <em>Erythronium mesochoreum</em> is reported from a railroad prairie remnant in Macoupin County, Illinois. The significance of this discovery is discussed, a table is included to distinguish the three species of <em>Erythronium</em> found in Illinois, and a list of species is provided for the prairie.
ABSTRACT The root parasite <em>Pyrularia pubera</em> Michx. (Santalaceae) is a common endemic shrub of the southern Appalachian Mountains. Hosts of <em>Pyrularia</em> were determined by field excavations and by growing <em>Pyrularia</em> seedlings with potential host seedlings in a controlled environment. Sixty tree, shrub, and herbaceous species were parasitized, including 50 genera and 31 families. Some species were not parasitized either in the forest or under culture.
ABSTRACT As a consequence of active interest in the endangered species of Maryland and the northeastern United States in general, a critical appraisal and evaluation of the rare plants of the state was undertaken. This field and herbarium study has uncovered seven previously unreported indigenous taxa in the state, namely: <em>Carex exilis</em>, <em>Cymophyllus fraseri</em>, <em>Arenaria stricta</em>, <em>Ceratophyllum echinatum</em>, <em>Potentilla tridentata</em>, <em>Viola rostrata</em>, and <em>Cornus rugosa</em>. In addition, 47 new inclusions are suggested for monitoring on the Maryland list of endangered and threatened plants and 27 changes in status from the previously published list are indicated due to the increased locality data available. Herbarium vouchers are cited wherever necessary.
ABSTRACT <em>Agastache scrophulariaefolia</em>, <em>Arenaria godfreyi</em>, <em>Ceratophyllum muricatum</em>, <em>Crepis setosa</em>, <em>Fimbristylis tomentosa</em>, <em>Glyceria pallida</em>, <em>Solidago ptarmicoides</em>, and <em>Sporobolus junceus</em> are reported as state records. Several other infrequently encountered taxa are presented, mostly as county records for Tennessee or as important range extensions. Additional information is given for <em>Comptonia peregrina</em>, <em>Cyperus engelmannii</em>, <em>Helenium brevifolium</em>, <em>Lythrum salicaria</em>, and <em>Potamogeton amplifolius</em>, all of which are rare plants in the state and had not been observed for nearly a half century or more.
ABSTRACT The aquatic families of Magnoliidae occurring in Alabama include Ceratophyllaceae, Nymphaeaceae, Saururaceae, Nelumbonaceae, Cabombaceae, and Ranunculaceae. Keys, distribution maps, habitat information, and other notes are presented for the aquatic members of these families.
ABSTRACT Two landslide scars (slide tracks) were plot sampled one and two years after landsliding to determine plant species involved in ecesis. The study site is located in a blockfield cove on Massanutten Mountain, northern Virginia. Old growth forest, adjacent to the slide tracks, is composed primarily of hemlock (<em>Tsuga canadensis</em>) and sweet birch (<em>Betula lenta</em>). These species are the first and foremost colonizers on the slide tracks. Dendrochronological analysis shows that landsliding is frequent at the study site and this disturbance may impart non-equilibrium conditions on the forest. Seed bed characteristics, light availability, and mode of dispersal may be important factors in plant ecesis on slide tracks.