346 



PATAGONIAN EXPEDITIONS! BOTANY. 



KEY TO THE GENERA. 



A. Flowers cyclic, small. Endosperm not ruminate. 

 b. Stipules none. 



c. Partial inflorescence without an involucre. Stamens 3. Bracts smooth, not accrescent. 

 Dwarf annual. i. Koenigia (Macounastnim). 



c2. Flowers involucrate. Stamens 9. 2. Eriogonum. 



b2. Stipules ochreate. Flowers 3-merous. Perianth more or less coriaceous about the fruit, 



yet not close. 3. Rumex. 



A2. Flowers acyclic; floral leaves mostly upright in fruit. 



b. Endosperm not ruminate. Embryo small, not folded. 4. Polygonum. 



62. Endosperm ruminate. Flowers hermaphrodite or polygamous. Perianth dry about the 



fruit, wingless. Climbers. 5. Antigonum. 



3. Endosperm ruminate. Subdicecious, twining plants. Perianth fleshy about the fruit, 

 5 -partite. 6. Muehlenbeckia. 



i. KCENIGIA Linn. Macotmastmm Small. 



Dwarf, glabrous annuals, fleshy, subsessile. Leaves small, oval, entire, 

 whorled at the top, differing below. Flowers few in the axils, crowded 

 among the upper leaves, minute, articulated on the pedicels ; each sub- 

 tended by a bract, which is adnate to and shorter than its pedicel. 

 Perianth deeply 3 (2-4)-cleft; stamens 3 (1-4), short. Nut trigonal or 

 compressed. The name Koenigia L., though dating from 1767, is rejected 

 by Small, because of Konig of Adans, 1763. This may be justified by the 

 confusion caused by several other applications of the same name, sub- 

 sequent to 1767, as Konigia, Koniga, 

 and Kocniga ; \>\\\. Koznigia is not iden- 

 tical with Konig and has priority over 

 the others. 



Species 2, one (K. islandica L.) in 

 arctic regions, extending to the Hima- 

 laya ; the other in Fuegia. Fig. in Brit. 

 & Br. i, 542. 



K. FUEGIANA Dusen. 



fucgiana Flowering branch and Intricately branching, SOrdid-green. 

 (on right) stipular sheath (after Dusen). 



Root fibrous, producing several, short, 



dichotomizing stems. Leaves fleshy, subsessile, alternate, crowding 

 upwards, obtuse. Stipules connate, forming ample, short sheaths. 

 Flowers in 3*5 or more, the apical small, yellow-green, with small, 



FIG. 62. 



