PANICE^iS. 129 



New Jersey, U. »V. Dcpf. Ayricul. 39 from Scribuer; Aliibaina, 

 MoJirj Mic'liigau, Couley. 



A tall leafy grass, growing in wet places. Massachusetts to 

 Texas. 



44. P. proliferum Lam. Encycl. 4: V47 (1707). /'. ntiUareum 

 Walt. Fl. Car. 1'Z (17S8), not L. 



Annual; mostly smooth throughout. Culms branched, ascend- 

 ing, very variable in size at the nortli, 30-50 or more cm. high. 

 Sheaths flattened; ligule ciliate; blades flat, 10-20 cm. long, 5 

 mm. or more wide. Panicles terminal and lateral, compound, 

 pyramidal, rays rough, slender, spreading, exsertcd or partially 

 included, 10-20 cm. long. Spikelets jtale green or ])ur|)le, 

 crowded, appressed on short pedicels, lance-ovate, acute, 2.0-3 

 mm. long; iirst glume broad, reniform. 1 mm. or less long, .1-;J- 

 nerved, second glume as long as the S[iilvelet, 7-nerved. tliird 

 5-nerved; fertile floret oval, smooth, 2 mm. long. Sometimes there 

 is a palea for the neuter floret. 



Dam}) places, ]S'('W England to Texas; also in Illiiu)is. 



Var. geniculatum (Muhl.) Vasoy, Contrib. U. S. Nat. Herb. 3: 

 34 (18!)2). P. ;/(')! ii'iilaf 1(1)1 Muhl. (iram. 123 (1S17). 



" This is sometimes called 's[»r()uting Crabgrass.' "J'iie stems 

 are at first erect, then become decumbent ami spreading, fre(|ueutly 

 attaining a length of (i-7 feet, bent and rooting at the lower joints. 

 It has much the sanu' habit as /'. Ti'.rainniK but the stems are 

 smooth and more flattened; the leaves also are smoother and 

 larger. 'JMie stems are sometimes nearly an inch thick at the base, 

 and very succulent. The panicles are sonu>tiines 2 feet long." 

 N'asey, Desc. Cat. Orassi's V. S. Leaves rough nbove. 



District of Columbia, l'. S. Dvpt. At/ricti/. coll. \'asey. 



Southern States; common. 



45. P. capillare L. Si). JM. 5S (1753). Olimvitch ({uass. 



Annual; culms erect or spreading, branching below, mostly 

 30-GO cm. liigh. Sheaths hirsute with hairs having tuberculous 

 bases; blades thin, flat» usually hirsute. 15-30 em. long, 1-1.5 cm. 

 wide. Panicle 2(l-;}0 cm. long, contahiing many capillary rays, 

 partially included when young, sju-eading when old by the action 



