STRAND PLANTS
The species whose names are preceded by an asterisk (*) are not restricted to the Lower Austral zone, but extend south into the tropical region. A complete list of the species known to reach their northern limits in the Dismal Swamp area is given in the table of northern limits of Austroriparian species, which can be found at the end of this chapter. In addition to the Lower Austral element which dominates the flora of this region and the large number of Upper Austral species, there are a number of plants which apparently reach their southern limit here, at least in the coastal plain.
A prefix (*} indicates that the species reaches its true austral limit in point of latitude, regardless of elevation, in the Dismal Swamp region.
PA LUSTRINE SPECIES
Paspalum pa&paloid*>s (Mx.) S^ribner Paxpalum praecox Walt /Vi,v/7a/w»i pwrpum^T?^ Ell .. A Htphicarpon amvhicnrpitn ; Pursh) Nash_ _ Aufltaenantia villom Bt auv St/u theri&ntct serotinum Wit , Panicttm amaiim Ell Pfoiicum amarum minus Vasey & Scribn. Lipororpka maeutatn (Mx.) Torr |.. Rynrhoxpura axilla via iLam.) Britton Rhynchospora microcrphaia Britton ftynchospowi kurinta Vahl j x rtynrhtYspont comirttfata (Lam,) A. Jussiaea grandiflora. f hjnotfir.ra humifusn Neut 11 l*roserpi tiara pectinata Lam Myriopfir/flurti pintiatum l Walt. > B.S.V.
Lvnmanth^Tii^i ftqitatictnn (Walt.) Brit ton Amsonia an fputt ifolia Mx lYrtcJifioflpcrHUfm diffann# (Walt.) A.Gray Asclepiasamph\ricnuli& Mx Aaclrpias lanccolata Walt - Asclepias rub) a L - - — — Asclepias toiui'titosa Ell . - — Cynanchum pahtxtrv (Pursh) Ht>llor Vincetojrirmn randinvitsi# (Jao<|.) Britton — Vincetojricuin {jatiocarpon Wult.t Vincetwrirttm hirsnhutt |Mx,) Brit ton Vincetttjeicmn sutwro&nm (L.) Brittoil. Eupatorium mpillifolium (Lam.) Majhna * Eupatorium coronopifolium Wiilri Eupatorium limarifolium WuH Eupatorium leucolepi# Torr.& Ali Eupa toriurn pinnatifidum Ell , Eupatoritim rofundifotium L Eupatorium svmiserratum DC Eupatorium wrotinurtt Mx 1 Eupatorium torreyanum Kratek t Eupittorium verbeitaf1 folium Mx jMchmria elcgans (Walt.) KuntE** J^tciiiarifigramiitifnlia ^Walt.) Kuntzc 1 .act tt aria gvatninifoliapitofta (Ait.) Bring it toil. Tritisa pan icidata (Walt.) Cass Carpkephoms Iwllittifoliws (Mx,) Torr* & (ii Carphvphurus iomcntoms (MxO Torr).
Chondrophora nudata (Mx.) Biritaan Ayyaana** cfliottii Torr, & Gr Sofidayo fi&tutosa Mill Solidago petiolarix Alt, t tiotidayo puhemdapuivcruh*nta (Xutt.) Cliapui. Soli da yo cimaa Alt, * Hojii hndifitlia E1I__, Euthnm ia Carolinian a (L-1 + Si'ricttcarjms hifoliatus (Walt.) Porter Aster conrolor L jdsfer coridifolius Mx Aster ijrac.itin Nutt. Aii xiinxalli tarreewwan kanaa akka agarsiisutti caalaatti Mian gosoota naannoo Dismal Swamp keessatti kan argamanii fi baha Ameerikaa Kaabaa keessatti kan argaman keessaa harka sadii keessaa lama xiqqaa yoo ta’an, gosoota 1 hanga 0 kan qaban yoo ta’u, isaan keessaa walakkaan kudhan inonotypical dha.
Of the 2'j genera common in eastern North America and eastern Asia 2 are monotypic, 9 have 2 species each, and 4 consist of ;} species each. 500 are endemic to extratropical North America, the great majority in the country east of the Kocky Mountains and a large percentage in lord of the wretched.
The object of the table is to present the distribution of Moras according to families, so that those which are dominant in the region appear at once. On the other hand, there is a great development of other Oyperaceue (especially Cy perns and liynchospora), which belong essentially to the warmer parts of the world;. Moreover, in the largest family of true grasses, Poaceae (Orarnineae), half of the native species belong to the two mainly tropical tribes Andropogoneae and.
7 LflS
On the southern border of the Dismal Swamp region, other crops are usually more important than trucks. From several of the early summer vegetables, another crop is often made in the autumn - e.g. Potatoes are grown to a large extent in the Neuse liiver bottomland, but there the soil is really better.
Peculiar chemical conditions are also found in the soil of the swampy forests as long as they remain in their natural state. What is the character of the original forest and undergrowth on lands of this class. Meanwhile, a large part of the beef and even the dairy products consumed in the region are imported from the North and West.
There is a marked difference in the character of the native vegetation in the different types of soil in the State. In the suffocating veins of the upper surface and to the petiole margins, scattered, short, conical, acute-pointed, four-celled or viviparous. Hairs in dense acuminate tufts in the axils of the main veins at the base of the lower surface of the blade,.
Sacs of a milky fluid occur in the pneumatic tissue and in the leptoma of the veins. Mucus in the cells of the epidermis and in one or two layers of the colorless parenchyma beneath the mestomc bundles of the midvein. Stomata only on the dorsal surface, numerous, usually parallel to the longer axis of the leaf, at the level of the surface.
Stereom, in two strong groups, adjacent respectively to the liadrome and leptoma of the larger veins; also in strong groups in the magazine. Hypoderm continuous on the ventral side of the leaf, single-layered, its whorls almost iso-diametric, containing chlorophyll. Pneumatic tissue with numerous lacunae, its cells much like the cells of the palisade ('or, which contain rather large and unusually perfect masses of crystals ("Drusen" or "maeles") of calcium oxalatc are numerous in the mesophyll.
No hairs on leaf surface; small glandular hairs multicellular, ctvate, sparsely scattered along the margins. 1 This stronger undulation of the radial walls on the upper surface of the leaf appears somewhat anomalous.
