TETRAGONIACEAE. 49 



l<f I 1. B. paniculata L. C. Eieh. Stem branched at the base, the branches 

 diffusely spreading, 6-12 dm. long: leaf -blades ovate to oblong-ovate, 2-8 cm. 

 long, both surfaces of almost the same color: calyx pink or purplish; tube 

 glandular-pubescent; limb campanulate, 1.5 mm. high, glabrous or sparingly 

 pubescent: fruits obpyramidal, 3 mm. long, the ribs glandular, the top 

 rounded. — Pinelands and hammocks, U. keys, L. keys. — [E. K.] — (Bah., Cuba, 

 Ant.) 



ffi~ 2. B. vlscosa Lag. & Eodr. Stem widely branched at the base and throughout, 

 the branches spreading in all directions: leaf-blades ovate to oblong, 2-4 cm. 

 long, whitish beneath, becoming glabrous: calyx pink or purple-pink, glandu- 

 lar; limb campanulate, 1-1.5 mm. long: stamens 3, exserted: fruit clavate, 

 3-3.5 mm. long, acutish. — Hammocks and waste places, L. keys, L. S. keys, 



/^, 3. B. erecta L. Stem simple below, erect or branched at the base, the 

 / branches decumbent or spreading, 3-12 dm, long: leaf -blades ovate to deltoid- 

 ovate, 2-8 cm. long, minutely black-dotted on the lower whitish surface: 

 calyx white or purple; tube glabrous; limb campanulate, 1-1.5 mm. long, 

 sparingly pubescent: fruit obpyramidal, 3.5-4 mm. long, 5-angled, the grooves 

 transversely wrinkled, the top flat. — Cultivated grounds, roadsides and dry 

 sandy places. Key West. Nat. of Trop. Am. — [E. K.] — (Ber., Bah., Cuba, 

 Ant.) 



4. TOKRUBIA Yell. Unarmed shrubs or trees. Leaves opposite: blades 

 entire. Flowers in cymes. — Blolly. 



Leaf-blades glabrous : inflorescence-branches glabrous in age. 1. T. lonyifoUa. 



Leaf-blades copiously pubescent : inflorescence-branches perma- 

 nently pubescent. 2. T. floridana. 



I<f I 1. T, longifolia (Heimerl) Britton. Leaves 3-7 cm. long; blades spatulate 

 to obovate, oblong-spatulate, or oval-spatulate : fruits broadly or narrowly 

 obovoid, 5-6 mm. long. — Hammocks, U. S. keys, U. keys, L. keys. — [E. K.] — 

 {Bah., Cuba, Ant.) — Beef-tree. 



/S. 2. T. floridana Britton. Leaves 2-3.5 cm. long; blades spatulate: fruits 

 slightly broadened upward, 6-7 mm. long. — Hammocks, Rock Key, west of 

 Key West. — {Endemic.) 



5. PISONIA [Plum.] L. Armed woody vines, or shrubs or trees. Leaves 

 opposite: blades entire. Flowers in compound cymes. 



Stems mostly climbing, armed : leaf-blades abruptly pointed or short acuminate : 

 fruits glandular from the base to the apex. 1. P. aculeata. 



Stems erect, unarmed : leaf-blades blunt or retuse : fruits glandular 



above the middle. 2. P. rotimdata. 



ff^ 1. P, aculeata L, Stems with spreading thorn-armed branches: leaf -blades 

 elliptic, oval, or ovate, 2.5-7 cm. long: pedicles slender: calyx-lobes mostly 

 longer than wide: fruits slender, 3-3.5 mm. thick. — Hammocks, U. keys, L, 

 keys, — [E, K,] — {Bah., Cuba, Ant.) — Cock-spur. 



I'j'j 2. P. rotundata Griseb. Small tree or spreading shrub, the bark pale: leaf- 



' blades thick, broadly oblong or oval, varying to obovate, 2.5-8 cm. long, short- 



petioled : cymes densely flowered : calyx green or whitish, broadly funnelf orm, 



about 3 mm. long, tomentulose along the edge: fruits slender, 2-2.5 mm. thick. 



— Hammocks, U. keys, L. keys. — {Bali., Cuba.) — Pisonia. 



Family 8. TETRAGONIACEAE. Carpet-weed Family. 



Herbs, firm or succulent, or partially woody plants. Leaves alternate 

 or opposite, sometimes apparently whorled. Flowers mostly perfect or 

 polygamous, regular or nearly so. Calyx of 4 or 5 sepals. Corolla want- 

 Flora of Florida Keys 4, 



