UMBELLIFER2E. 321 



pq J General involucre of several bracts 13. Sium. 



I No general involucre, or only a single bract .... 7. Helosclad. 

 „~ f Umbels mostly lateral, almost sessile 31 



I Umbels all terminal or pedunculate 32 



f Leaves with few ovate segments 6. Apium, 



31 *j Leaves twice or thrice pinnate, with numerous small segments. 



*- 16. Fine-leaved CEnanth. 

 oo f Erect branched annuals (not above 2 feet high) 33 



I Perennials or tall biennials 36 



oo J Partial involucres longer than the flowers, and reflexed . 17. ^Ethusa. 



I Partial involucres shorter than the flowers, or none 34 



04 f Fruit globular or broader than long 35 



'{; 



. Fruit ovoid or longer than broad 41 



or f Fruit globular, not separating into two 38. Coriander. 



1 Fruit separating into 2 small globular carpels 8. Sis ON. 



rFruit of 2 little, globular, bladder-like lobes or carpels 36. Physosperm. 

 36 <j Fruit nearly globular or broader than long ......... 37 



L Fruit ovoid or longer than broad 41 



^h J Partial involucre of several bracts ' 38 



I No involucres •. 40 



r Flowers of a yellowish-green. Ribs of the fruit acute, almost winged. 



38 <J 21. SlLAFS. 



L Flowers white. Ribs of the carpels obtuse, or crisped, or not prominent 39 

 r Calyx-teeth appearing above the fruit. Leaf-segments narrow. 



oq! 5. COWBANE. 



1 Calyx-teeth not conspicuous. Leaf-segments numerous, small. 



L 35. Hemlock. 



pStem erect, not much branched. Leaves pinnately divided with ovate, 



1 lanceolate, or linear segments 14. Pimpinel. 



j Stem short, with spreading stiff branches. Leaves ternately divided with 



L subulate segments ' 10. Trpnia. 



r Leaf-segments divided into numerous subulate lobes, not above 2 lines 



41 <J long, in opposite clusters, appearing whorled along the common stalk 42 

 L Leaf- segments oblong-lanceolate or linear, and flat ...... 43 



r Common stalk of the leaf simple. Fruit not above 2 lines long. 



42 «{ 12. Whorled Carum. 



L Common stalk branched. Fruit 3 or 4 lines long ... 22. Spignel. 



. f Rootstock a globular tuber 44 



I Rootstock or root not tuberous . 45 



r Styles closely reflected on the fruit. Ribs of the fruit prominent. Yittas 



AA I single 12. Tu herons Carum. 



44 < ° 



1 Styles erect. Ribs of the fruit scarcely visible. Yittas several to each 



L interstice 31. Bunium. 



rUmbels of 3 to 5 very unequal rays 9. Field Parsley. 



.^ ! Umbels of 7 to 10 rather unequal rays. Calyx-teeth not conspicuous. 



12. Caraway Carum. 

 ^ Umbels of 10 to 20 rays. Calyx-teeth prominent . . .16. GEnanth. 

 TOL. I. 2 C 



