UMBELLIFERiE. (PARSLEY FAMILY.) 329 



* Umbels simple. 



Tribe I. HYDROCOTYIiK/T:. Fruit flattened laterally. 



Tribe II. SANICUIiE^. Fruit terete or flattened laterally or dorsally. 



* * Umbels compound. 



\ Primary ribs only prominent, (except in Jlmminece, Coriandrum, Bifora and Siler). Vittct 

 rarely wanting in the intervals. 



X Fruit [except in a few Smyriieai) flattened laterally. 



Tribe III. KCHINOPHORE^. The central flower of umbel fertile. The ray' 

 flowers staminate, pedicelled. '1 he fruit enclosed in an involucre of the sterile flowers. 



Tribe IV, SMRYNE.E. Fruit nearly globular, broad-ovate, oblong-linear, or twin, 

 rarely terete or slightly flattened at back, (Secondary ribs visible in Coriandrum and Bifora). 

 Inner surface of albumen deeply grooved, rarely concave. 



Tribe V, AMIYIIIVE.E, Fruit ovate, oblong, or twin, rarely short-linear. Secondary 

 ribs visible. Inner surface of albumen flat, rarely concave. 



Tribe VI. SCANI>ICINK^. Fruit linear, usually beaked, rarely oblong. Inner 

 face of albumen grooved, rarely concave. 



X X Fruitflattened dorsally, or more or less convex or terete. 



Tribe VII. SESEL.INE.E. Fruit terete or nearly so. Inner face of albumen flat or 

 concave. Lateral ribs distinct, or united into a thickened but not dilated margin. 



Tribe VIII, PEUCEDANEE. Fruit ovate, lenticular, or oblong-elliptical, flattened • 

 Secondary ribs (except in Siler). Inner face of albumen flat or concave. Lateral ribs dila- 

 ted into a wing, or broad, tumid margin. 



t t Intervals over the vittoe thickened, or furnished with secondary ribs. 

 Tribb IX, CAUCALiINE^E. Fruit nearly cylindrical, or flattened laterally, or dorsal 

 ly. The primary and secondary ribs terminating in lobed crests, or bristle's, or prickles, or rare 

 ly entire ; the secondary more prominent than the primary. 



Tribe X, liASEKPlTIE/E. Fruit nearly terete or dorsally flattened. Primary ribs 

 filiform, rarely winged, secondary all, or only the lateral, broad-winged. 



Tribe I, HYDROCOTYLE^. 



1. HYDROCOTYL.E. Water- Pennywort. 



Calyx-teetli obsolete. Petals ovate, entire, acute, not incurved. 

 Mericarps destitute of vittse, the ribs 5, filiform, the keel and lateral 

 ones often obsolete, the intermediate arched. Carpophore undivi ded — 

 Perennial, prostrate, tender herbs, rooting at joints. 



H. natans, Cyr. 21 Glabrous. Leaves long-petioled, round- 

 reniforrn, with narrow sinus, obtusely crenate-lobed, palmately nerved. 

 Peduncles short, thick. Flowers 5-6, short pedicelled, capitate-umbel- 

 led; fruit torn, the mericarps obscurely ribbed — Summer — Ditches; 

 Huleh. 



Tries II. SANICIJIiE^. 



* All the flowers sessile. 



2. ERYNGIUM. The flowers hermaphrodite, in dense heads. Herbs, usually prickly. 



* * All thefloioers, or at least the staminate, peduncled, 



f The ovary 2-celled. 



3 ACTINOLEMA. The flowers enclosed in a large involucre. Ribs cristate-dentate. 



4. SANICULA. The flowers enclosed in a small involucre. Fruit covered with hooked 

 prickles. 



1 1 The ovary 1-celled, 1-seeded. 



5. LAGCEGIA. Heads globular, many-flowered. Fruit bristly. Leaves pinnate. 



2. ERYNGIUM, L. Button Snake-Root. SJdnddd. 



Flowers all hermaphrodite. Calyx-teeth 5, acute, stiff. Petals 

 erect, connivent, notched, with a long tip bent inward. Fruit ovoid, 



45 



