*Euphorbia lathyris* Linnaeus, Sp. Pl. 1: 457. 1753.
Some times spelled as *Euphorbia lathyrus* L., orth. var. Herbs, annual, erect, up to 1(-1.5) m tall. Rootstock a simple taproot, slightly swollen in seedlings, up to more than 20 cm × 3-7 mm thick; lateral roots thin and branched. Stem single, gray-green, smooth and glabrous. Leaves opposite, decussate; stipules absent; petiole absent; leaf blade linear-lanceolate, 6-15(-20) × 0.4-2.5 cm, glabrous, base ± clasping stem, margin entire, apex acuminate or acute; midrib prominent adaxially, lateral veins inconspicuous. Inflorescence a terminal pseudumbel, often compound, eventually broad and lax; primary involucral leaves (2-)4 or 5(or 6), slightly yellowish green, narrowly elliptic to ovate-elliptic, somewhat unequal, margin entire, base rounded, primary rays (3 or)4 or 5; cymes regularly many forked; cyathophylls 2, ovate-triangular, 3-8 × 2-4 cm, base truncate to clasping, margin entire, apex acuminate or acute. Cyathium subsessile; involucre subcampanulate, 2.5-4 × 2.5-3.5(-5) mm, lobes triangular-oblong, less repanded or lobed; glands 4, dark brown, transversely oblong-reniform with a club-shaped horn at each tip. Male flowers many, exserted from involucre. Female flower exserted from cup; ovary smooth, glabrous; styles free, slender and long, caducous; style arms 2-lobed. Capsule trigonous-globose, ca. 10 × 13-17 mm, smooth, glabrous. Seeds ovoid-globose to barrel-shaped, 5-8 × 4-6 mm, brown or gray-brown, with black-brown spots on surface, sharply rugulose; caruncle ca. 1.5 mm wide, yellowish, sessile, easily lost. Fl. Apr-Jul. 2*n* = 20*. Illustration: http://www.efloras.org/object_page.aspx?object_id=109318&flora_id=2 Images and further description: http://www.hear.org/pier/species/euphorbia_lathyris.htm Regards Tanay On Sun, Jul 4, 2010 at 8:28 AM, Gurcharan Singh <[email protected]> wrote: > 040710GS1 Euphorbia from Kashmir. I find similar plant identified as E. > dracunculoides at Flowers of India website, but having seen this species in > Delhi, it is quite different with linear-lanceolate leaves, whereas this > plant has leaves with much broader almost sessile leaf base. > > Habitat: Grown in pots, sometimes in shaded corners > Habit: herbaceous plant, up to 70 cm tall > Leaves: mostly opposite, sessile, nearly ovate with long acuminate apex. > Inf: Axillary cyathium, nectaries semilunar, crescent shaped, ovary > glabrous > Fruit: nearly 1cm, subglobular, 3-lobed, with three additional depression > lines, on on each lobe, glabrous, green > > > -- > Dr. Gurcharan Singh > Retired Associate Professor > SGTB Khalsa College, University of Delhi, Delhi-110007 > Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. > Phone: 011-25518297 Mob: 9810359089 > http://people.du.ac.in/~singhg45/ <http://people.du.ac.in/%7Esinghg45/> > > -- > You received this message because you are subscribed to the Google Groups > "efloraofindia" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<indiantreepix%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/indiantreepix?hl=en. > -- Tanay Bose +91(033) 25550676 (Resi) 9830439691(Mobile) -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/indiantreepix?hl=en.
