212 PLANT NAMES AND SYNONYMS 



1121. LABLAB, Adans. 1763. Egyptian Bean. Papilionaceae. 



From vernacular name, Africa. Syn. Lablavia, Don 1834; 

 Dolichos, in part. Herbaceous climbers. One species, Africa. 



a. L. Lablab (L. ) Lyons (D. Lablab L., L. vulgaris Savi, L. 

 niger Medic, and L. rufus Medic, L. cultratus DC, Lablavia 

 vulgaris D. Don). Africa, widely cult, in tropical countries. 

 Egyptian Bean, Black or Hyacinth Bean. Seeds and 'pods es- 

 culent. 



1122. L ACHNOC AULON, Kunth. Lachnocaulon. Eriocaulaceae. 



From Greek, 'VooUy stemmed". Syn. Eriocaulon, in 

 part. Scapose herbs resembling Eriocaulon. Four known 

 species, southern U. S. 



1123. LACHN6ST0MA,H. B. K. Lachnostoma.Asclepia(iaceae. 

 From Greek, "woolly mouth" , of the corolla. Herbaceous 



climbers. About 5 species, warmer regions of New World; 

 l.in U. S. 



1124. LACINIARIA, Hill. 1762. Blazing-star. Compositae. 



From Latin, "fringed", from appearance of flower heads. 

 Syn. Liatris, Schreb. 1791; also Serratula, Stoepelina, in part. 

 Perennial herbs mostly from tuberous roots, the showy flower- 

 heads in racemes or spikes. About 15 species, all of U. S. 



a. L. scariosa (L. ) Hill (Ser. scariosa L., Liatris scariosa 



Willd. ). Maine to Florida, west to Texas, Nebraska and Mani- 

 toba. Large Button-Snakeroot, Gay-feather, Kattlesnake' s- 

 master. Blue Blazing-star, Devil's-bit. Root of this and fol- 

 lowing species reputed diuretic, diaphoretic, carminative. 



b. L. spicata (L.) Kze. (Ser. spicata L., Liatris spicata Willd. ). 



Massachusetts to Florida, west to Louisiana and Wisconsin. 

 Button Snakeroot, Dense Button-Snakeroot, Gay-feather, Devil's- 

 bit. Rough-root, Sawwort, Throatwort*, Colic-root*, Rattle- 

 snake' s-master. Corn Snakeroot, Prairie-pine, Backache-root. 



c. L. squarrosa (L. ) Hill (Ser. squarrosa L., Liatris squarrosa 



Willd.). Scaly Blazing-star, Colic-root, Rattlesnake' s-master. 



1125. LACTl^CA, L. - Lettuce. - Cichoriaceae. 



Ancient Latin name, "milky", whence our word lettuce. 

 Syn. Mulgedium, Sonchus, in part. Herbs with small flower 

 heads (yellow, white or blue). About 85 species, northern 

 hemisphere; 10 in U. S. 



a. L. Canadensis L. (L. elongata Muhl. ). British America, 

 south to Georgia and Louisiana. Wild Lettuce, American or 

 Canada Wild Lettuce, Tall Lettuce, Butter-weed, Devil's-weed, 

 Devil's Ironweed, Fireweed*, Horseweed, Snake-bite, Snake- 

 weed, Trumpet-weed, Trumpet Milkweed, Trumpets, Wild 

 Opium. J}iice mildly narcotic as also in the indigenous (b) L. 

 hirsuta Muhl. (L. sanguinea Bigel., L. elongati, var. san- 

 guinea T. & Gr. ), Hairy or Red Wood-lettuce and (c) L. 

 sagittifolia Ell. (L. integrifolia Bigel, not Nutt., L. elongata, 

 var. integrifolia T. & Gr. ), Arrow-leaved Lettuce, Devil's 

 Ircn-weed. 



