199. 
Sonchus 
Sonchus asper (L.) Hill Sow-thistle 
Java Farm. One station: base of tile silo at main building area. 
Hectare 2590. Higman 827. 
Lactuca 
1. Achenes tapering to a stout, broadened summit; 
flowers blue. 
2. Pappus tawny or olive. Expected (L. biennis). 
Zig PAPPUS! WHTEC ccc eee ecocisivnsecccess ss esleisisicisciee sive cscs Lue tlorddana 
1. Achenes tapering to a filiform beak; flowers 
yellow. 
3. Heads 5- to 8-flowered; achenes 5- to 7-ribbed 
on each face, oblanceolate to narrowly obovate. 
Expected (L. scariola, L. saligna). 
3. Heads 12- to 20-flowered; achenes 1- to 3- 
ribbed on each face, oblong, elliptic, or 
oval. (Also, beak Jointed) c cis cc wcice elie ciel se sm ce Limcanadensilis 
Lactuca floridana (L.) Gaertn., 
var. villosa (Jacq.) Cronq. Lettuce 
Java Farm. One station: along old entrance road between gate at 
old Muddy Creek Road and culvert of Muddy Creek. Canopy of Fagus 
grandifolia, Quercus alba, Liriodendron tulipifera, Carya tomentosa, 
etc. Associate species: Eupatorium purpureum, Agrimonia microcarpa, 
Desmodium paniculatum, D. glutinosum, D. glabellum, Elephantopus 
carolinianus. Higman 30. 
L. canadensis L. Lettuce 
Java Farm. One station in old field. Hectare 3504. Associate 
species: Solidago rugosa, S. altissima, Aster lateriflorus. Higman 331. 
Pyrrhopappus 
Pyrrhopappus carolinianus (Walt.) DC. False Dandelion 
Ivy Neck. One station: tractor trail to abandoned field on 
Scaffold Peninsula. Hectare 4740. Associate species: Anagallis 
arvensis, Galinsoga ciliata, Rumex crispus. Higman 957. 
