BRITISH FORMS OF HELOSCIADIUM NODIFLORUM 189 
Godron, Fl. de France, i. 786; F.A. Lees in Bot. Exch. Club 
Report for 1879, 1 
- Sium repens Tien, Fl. Austr. iii. 34, t. 260 (1775) ; Linn. fil. 
Suppl. 181 (1781). 
pium repens Reichb. Icones FI. sonra Xx. t. MDCCCLV. sot 12. 
ant small, slender. Stem prostrate, rooting at every node. 
Leaves saciaeiig bahar or Eataeek ‘les all the fea tot ornate, 
total length 4-6, rarely 9 cm., forming about a right angle with 
cm. long, 
2-3 times longer than the rays of the umbel. Rays of umbel generally 
5-6. Involucre of 3-7 bracts, ‘‘ persistent.’ Inflorescence and 
leaves often approximately of the same length. Fruit broader than 
long, smaller and shorter San. in var. vulgare. Primary ridges ver. 
little mre Pr ominent than se 
Ee, Chase (Herb. Mus. Brit ri £), and Binsey, Oxon (herb. G. 
erb. 
Yorks, 8.E., Ff’. 4. Lees (Herb. Mus. Brit.). whys Cy in 
the Botanical Record Club Report for 1875 is angled as s aiating that 
~ ‘oa submitted to him from this locality by Mes . Lees 
arsons was the best example he had on “of H. repens 
Guillon Links, East t Lothian, coll. Mackay, por (herb. Smith). 
Doubtful plants coming very near the true H. repens we have 
n from Bungay Common, Suffolk, coll. Sock, Sin Hooker at 
Kae Sturbridge rain Green, Cambs, coll. 5. W. Wanton, herd. 
bing 
As confusion —— occurs between H. nodiflorum Koch 
and H, repens Koch on the one hand, and H. —- Koch and 
its South Beropean ally He crassipes “Koch (Be ichb. Ic. Fl. Germ. 
Xxi. t. mpcccLiv. i, 1-8) on the nian » we think it ek be worth 
while to give the following clavis 
* Leaves all aerial. Umbels wit 3-12 rays. 
H. nodiflorum Koch and H. repens Koch. 
** Leaves submerged and aerial. Submerged nape 
into io segments, aerial pin 
natisect. Umbel with 2-5 ra 
—4 mm. ote” : oe inna Koch. 
B. Umbel with 3-5 rays. ” Styles longer tha 
the stylopodium. Fruiting pedicels thi lk: .« 
ened. Fruit re broadly ovoid, 10-150 
mm. long : H. erassipes Koch. 
