HydrocotyJe] lxvii, UMBELLiFERiE. 42S 



LXVII. UMBELLIFERiE. 



This natural order is generally but poorly represented in the 

 tropics. 



The carrot generally is cultivated in gardens in Angola proper 

 and in Mossamedes, especially in the mountainous and highland 

 regions, and is occasionally semi-spontaneous ; the " Herva doce " of 

 the Portuguese, Pimpinella Anisum L., is occasionally cultivated, 

 as for instance near Quicuxe in the Loanda district, and also 

 in Benguella. Guminum Gyminum L. was nowhere seen by 

 Welwitsch in Angola. 



The genus Hydrocotyle is transferred by some botanists to 

 Araliaceae, principally becaiise the aestivation of the corolla is 

 valvate rather than imbricate as is usual in Umbelliferse. This 

 circumstance, Welwitsch remarks, only proves that the more 

 cai'efully natural orders are studied, the more difficult it becomes 

 to define them by clearly cut characters, and that it has been 

 shown that on the same principle Grithmum must be placed in 

 Araliaceae. 



1. HYDROCOTYLE Tourn., L.; Benth & Hook. f. Gen. PI. i. p. 872. 



1. H. sibthorpioides Lam. Encycl. Meth. iii. p. 153 (1789); A. 

 Eich. Mon. Hydr. in Ann. Gen. Sc. Phys. iv. p. 196, t. liv. f. 8 

 (1820). 



H. rotundifolia Roxb. Hort. Beng. p. 21 (1814). H. nitidula 

 A. Rich., I.e., p. 200, t. Ixiii. f. 33 ; Hiern in Oliv. Fl. Trop. Afr. 

 iii. p. 5 (1877). 



HuiLLA. — A slender herb, with the habit of a Dichondra Forst. In 

 the dried- up swamps of Empalanca on the summit of the mountains 

 of Morro de Lopollo at an elevation of 5000 to 5500 ft., in company 

 with species of Erlocaulon, Isoetes, Xyris, and with IncUgofera ende- 

 caphylla Jacq., var. radicans Welw. Herb. No. 2039, ante i. p. 215 ; 

 fr. April 1860. No. 624. 



2. H. asiatica L. Sp. PI., edit. 1, p. 234 (1753); Hiern, I.e., p. 6. 



IcoLO E Bengo. — Leaves often unequally crenate, with a very 

 obtuse basal sinus ; petioles and peduncles loosely shaggy ; umbels not 

 always 3-flowered. In moist grassy bushy places along the banks of 

 the river Bengo from Santo Antonio to Prata, abundant ; fl. and fr. 

 Dec. 1853. No. 619. 



LiBONGO. — A herb, creeping far and widely ; habit of a Geranium. 

 In spongy marshes on the left bank of the river Lifune, in company 

 with Jussicea erecta L. (Welw. Herb. No. 4460) and Azolla pinnata 

 Br., forma terrestris (Welw.\Herb. No. 37), tolerably abundant ; fl. and 

 fr. Sept. 1858. No. 620. 



GoLUNGO Alto. — In spongy swamps among tall grasses, in the 

 vicinity of Lissochilus giganteus (Welw. Herb. No. 673) and Typha 

 angustifolia L. (Welw. Herb. No. 247), at the base of the mountains 

 of Serra de Alto Queta, near Sange ; fl. and fr. July 1855. No. 622. 



PuNGO Andongo. — At the muddy margins of the Lagoa de Quibinda, 

 near Quibinda, at an elevation of 3500 ft., sparingly ; fl. and fr. March 



