Arisaema species H-N are found on this page
Arisaema heterophyllum This species doesn't emerge until mid June, then in a short period of just 2 weeks the plant grows to 5' (150 cm) tall to the top of the spadix. The first two pictures are of the whole plant, July 18, 2002. The next two are leaf photos taken July 2002. The first is a good view of the heterophyllous leaf, e.g. the leaf of the non-flowering shoot which is rather different, with broader, more ovate, deeply crinkled leaves with much fewer segments. All photos from Mark McDonough.
Smaller edition of Mark's plant grown by Arnold Trachtenberg.
Here a plant which shows its distinctive horse-shoe leaf and a twisted spadix. Photos by Giorgio Pozzi May 2006. These tubers came from Chen nursery by mistake in a mix with A. lobatum, A. serratum and A. amurense as A.60. They both have a twisted spadix.
Arisaema intermedium is a medium size plant, having a green spathe with light veins and a very long spadix appendage over the trifoliate cordate leaf. Grown and photographed by Giorgio Pozzi, May 2006.
Arisaema iyoanum "var. nakaianum" Makino is native to damp forests and streamsides on the Japanese islands of Shikoku and Honshu. A. iyoanum carries its long-canopied spathe above a tall, mottled pseudostem under one or two leaves which are divided into 9-17 leaflets. The form that is pictured here in sometimes called var. nakaianum, however Gusman & Gusman point out that in its native habitat it grows amid the typical, paler form and that the color forms also vary in their number of leaflets, thus "the validity of its varietal status must be questioned." Grows to about 120 cm (48"). Photos and text from Paige Woodward.
Arisaema jacquemontii Blume is native from Afghanistan to Tibet and grows to 70 cm (28"). It is described by Paige Woodward as a plant of El Greco-esque proportions with a deep, narrow bright green with white stripes spathe, a hood that rises up instead of curving down, and ends in a long whip, a spadix with a long and purple-black or green whip, and multi-fingered leaves. She recommends growing it in moist part shade and says it is hardy to zone 6. The first photo by Rob Hamilton. The second from Paige Woodward. The third from David Pilling.
Arisaema jinshajiangense is a medium size plant from Yunnan with a green spathe with white veins and a white area at the base and another white spot at throat level. It usually has two trifoliolate leaves and flowers late May to June here in Italy. Grown and photographed by Giorgio Pozzi, May 2006.
Arisaema kishidae, three views of this remarkable Japanese Arisaema, with odd translucent coppery brown spathes, veined whitish, colored near black-brown from the exterior. The flowers appear before the foliage. The leaves are dark, near black upon emerging, and are green and silvery veined when expanded. The first three photos were taken by Mark McDonough, April 25, 2004. The last is a picture of the spathe well developed before the leaves unfold, photo by Giorgio Pozzi, April 2007.
Arisaema kiushianum is perhaps the 'cutest' of the arisaemas, growing to only about a foot with owlish little striped "flowers", held very close to the ground with a multicolored spathe, slightly hooded and with a spadix appendage that sticks upward out of the spathe. It blooms in early summer and is from Japan. The first two photos were taken by John Lonsdale. Photo 3 is another closeup of the spathe with the typical T-shaped spot inside visible; photo by Giorgio Pozzi, May 2006. Photo 4 by Pontus Wallstén compares two flowering sized arisaema tubers, showing the huge variation in size found in this genus; to the left, Arisaema kiushinianum and to the right, Arisaema grifithii var pradhanii from India.
Arisaema lobatum Another species where plants are variable for spathe and leaf colors and sizes. Pictured below the first is a medium size plant with a yellowish/orange spathe and leaves with white and black spots, the second a green orange spathe, plain green leaves and mottled stem, the third a clump in cultivation. Photos by Giorgio Pozzi, April 2007
Arisaema macrospathum One of only three species of Arisaema found in Mexico. (The other species are A. triphyllum and A. dracontium whose distribution ranges also includes the United States.) It is a relatively common plant in oak and pine-oak temperate forests. The flowers appear in April-May just before the foliage starts to emerge. The leaf is similar to those of other Arisaema species but can be quite robust with some petioles reaching close to a meter in height. The most distinctive characteristic about the "flower" is the extraordinarily long spadix that sticks out of the inflorescence like a tongue. Local people call it "cola de caballo" which translated means "horse's tail". Photos by Dennis Szeszko photographed in-situ in Mexico State.
Arisaema nepenthoides is a tall plant with palmate leaves and tannish colored, eared flowers (having auricles). It also has attractive, darkly spotted 'stems'. It grows to about a meter tall. Flowers are variable among the various forms. This species is synonymous with Arisaema ochraceum, and the one pictured below is grown and photographed by Rob Hamilton.
This plant came from Ganesh Mani Pradhan nursery (INDIA). Grown by Giorgio Pozzi. Photographs below were taken March 2006. The first picture is of the stem, second picture the spathe, and finally there is a close-up.
Guy Gusman writes in his book this species is very variable in the spathe's characters, one year with evident auricles, one year without auricles. Here is a specimen with a double spathe. Looking opposite, the upper is female. The lower male, similar in colour and shape is ruined by the two stems; the upper by a strong wind before I took the pictures. This tuber also came from Pradhan nursery this Autumn and I don't know if this a settled character. Third a picture taken in April 2007 showing the pointed auricles of this specimen. Photo by Giorgio Pozzi .